From 26f28103ec406209c61eb114de5266f8a177031e Mon Sep 17 00:00:00 2001
From: khbsd <ken.bynell@gmail.com>
Date: Wed, 9 Apr 2025 02:49:09 -0500
Subject: [PATCH] Add Time-Based Encounters (#6454)

---
 Makefile                                      |   9 +
 include/config/overworld.h                    |  10 +-
 include/pokedex_area_screen.h                 |  12 +-
 include/rtc.h                                 |  22 +-
 include/wild_encounter.h                      |  33 +-
 include/window.h                              |   1 +
 json_data_rules.mk                            |   6 -
 .../add_time_based_encounters.py              |  97 +++
 src/dexnav.c                                  |  59 +-
 src/match_call.c                              |  11 +-
 src/pokedex.c                                 |  33 +-
 src/pokedex_area_screen.c                     | 267 ++++++-
 src/pokedex_plus_hgss.c                       |  32 +-
 src/rtc.c                                     |  19 +-
 src/wild_encounter.c                          | 206 ++++--
 src/window.c                                  |  14 +
 .../wild_encounters_to_header.py              | 673 ++++++++++++++++++
 17 files changed, 1391 insertions(+), 113 deletions(-)
 create mode 100644 migration_scripts/add_time_based_encounters.py
 create mode 100644 tools/wild_encounters/wild_encounters_to_header.py

diff --git a/Makefile b/Makefile
index de030e096f..a2c41d957f 100644
--- a/Makefile
+++ b/Makefile
@@ -171,6 +171,15 @@ LEARNSET_HELPERS_DATA_DIR := $(LEARNSET_HELPERS_DIR)/porymoves_files
 LEARNSET_HELPERS_BUILD_DIR := $(LEARNSET_HELPERS_DIR)/build
 ALL_LEARNABLES_JSON := $(LEARNSET_HELPERS_BUILD_DIR)/all_learnables.json
 
+# wild_encounters.h is generated by a Python script
+WILD_ENCOUNTERS_TOOL_DIR := $(TOOLS_DIR)/wild_encounters
+AUTO_GEN_TARGETS += $(DATA_SRC_SUBDIR)/wild_encounters.h
+
+$(DATA_SRC_SUBDIR)/wild_encounters.h: $(DATA_SRC_SUBDIR)/wild_encounters.json $(WILD_ENCOUNTERS_TOOL_DIR)/wild_encounters_to_header.py $(INCLUDE_DIRS)/config/overworld.h
+	python3 $(WILD_ENCOUNTERS_TOOL_DIR)/wild_encounters_to_header.py > $@
+
+$(C_BUILDDIR)/wild_encounter.o: c_dep += $(DATA_SRC_SUBDIR)/wild_encounters.h
+
 PERL := perl
 SHA1 := $(shell { command -v sha1sum || command -v shasum; } 2>/dev/null) -c
 
diff --git a/include/config/overworld.h b/include/config/overworld.h
index 820c4a5d9b..90aa546d48 100644
--- a/include/config/overworld.h
+++ b/include/config/overworld.h
@@ -103,9 +103,13 @@
 #define GEN_8_PLA                       GEN_LATEST + 2
 
 //Time
-#define OW_TIMES_OF_DAY                 GEN_LATEST // Different generations have the times of day change at different times.
-#define OW_USE_FAKE_RTC                 FALSE      // When TRUE, seconds on the in-game clock will only advance once every 60 playTimeVBlanks (every 60 frames).
-#define OW_ALTERED_TIME_RATIO           GEN_LATEST // In GEN_8_PLA, the time in game moves forward 60 seconds for every second in the RTC. In GEN_9, it is 20 seconds. This has no effect if OW_USE_FAKE_RTC is FALSE.
+#define OW_TIMES_OF_DAY                 GEN_LATEST   // Different generations have the times of day change at different times.
+#define OW_USE_FAKE_RTC                 FALSE        // When TRUE, seconds on the in-game clock will only advance once every 60 playTimeVBlanks (every 60 frames).
+#define OW_ALTERED_TIME_RATIO           GEN_LATEST   // In GEN_8_PLA, the time in game moves forward 60 seconds for every second in the RTC. In GEN_9, it is 20 seconds. This has no effect if OW_USE_FAKE_RTC is FALSE.
+#define OW_TIME_OF_DAY_ENCOUNTERS       FALSE        // If TRUE, will allow the user to define and use different encounter tables based on the time of day.
+#define OW_TIME_OF_DAY_DISABLE_FALLBACK FALSE        // If TRUE, if the encounter table for a specific map and time is empty, the area will have no encounters instead of falling back to the vanilla map and time.
+#define OW_TIME_OF_DAY_DEFAULT          TIME_MORNING // Should be set to whatever is the first value in the TimeOfDay enum in rtc.h
+#define OW_TIME_OF_DAY_FALLBACK         OW_TIME_OF_DAY_DEFAULT // The time of day that encounter tables fall back to. Defaults to whatever OW_TIME_OF_DAY_FALLBACK is set to.
 
 // Overworld flags
 // To use the following features in scripting, replace the 0s with the flag ID you're assigning it to.
diff --git a/include/pokedex_area_screen.h b/include/pokedex_area_screen.h
index 86dfaa6c5b..1127d780f2 100755
--- a/include/pokedex_area_screen.h
+++ b/include/pokedex_area_screen.h
@@ -1,6 +1,16 @@
 #ifndef GUARD_POKEDEX_AREA_SCREEN_H
 #define GUARD_POKEDEX_AREA_SCREEN_H
 
-void ShowPokedexAreaScreen(u16, u8 *);
+#include "rtc.h"
+
+extern u8 gAreaTimeOfDay;
+
+enum PokedexAreaScreenState
+{
+    DEX_SHOW_AREA_SCREEN,
+    DEX_UPDATE_AREA_SCREEN
+};
+
+void DisplayPokedexAreaScreen(u16 species, u8 *screenSwitchState, enum TimeOfDay timeOfDay, enum PokedexAreaScreenState areaState);
 
 #endif // GUARD_POKEDEX_AREA_SCREEN_H
diff --git a/include/rtc.h b/include/rtc.h
index bf8ff9aa93..ba69286716 100644
--- a/include/rtc.h
+++ b/include/rtc.h
@@ -1,7 +1,9 @@
 #ifndef GUARD_RTC_UTIL_H
 #define GUARD_RTC_UTIL_H
 
+#include "global.h"
 #include "siirtc.h"
+#include "config/overworld.h"
 
 #define RTC_INIT_ERROR         0x0001
 #define RTC_INIT_WARNING       0x0002
@@ -83,10 +85,17 @@
     #define NIGHT_HOUR_END     6
 #endif
 
-#define TIME_MORNING           0
-#define TIME_DAY               1
-#define TIME_EVENING           2
-#define TIME_NIGHT             3
+// TIMES_OF_DAY_COUNT must be last
+enum TimeOfDay 
+{
+    TIME_MORNING,
+    TIME_DAY,
+    TIME_EVENING,
+    TIME_NIGHT,
+    TIMES_OF_DAY_COUNT,
+};
+
+STATIC_ASSERT(OW_TIME_OF_DAY_DEFAULT == 0, TimeOfDayDefaultMustBeFirstElementInTimeOfDayEnum)
 
 extern struct Time gLocalTime;
 
@@ -112,12 +121,15 @@ void FormatHexDate(u8 *dest, s32 year, s32 month, s32 day);
 void RtcCalcTimeDifference(struct SiiRtcInfo *rtc, struct Time *result, struct Time *t);
 void RtcCalcLocalTime(void);
 bool8 IsBetweenHours(s32 hours, s32 begin, s32 end);
-u8 GetTimeOfDay(void);
+enum TimeOfDay GetTimeOfDay(void);
+enum TimeOfDay GetTimeOfDayForDex(void);
 void RtcInitLocalTimeOffset(s32 hour, s32 minute);
 void RtcCalcLocalTimeOffset(s32 days, s32 hours, s32 minutes, s32 seconds);
 void CalcTimeDifference(struct Time *result, struct Time *t1, struct Time *t2);
 u32 RtcGetMinuteCount(void);
 u32 RtcGetLocalDayCount(void);
 void FormatDecimalTimeWithoutSeconds(u8 *dest, s8 hour, s8 minute, bool32 is24Hour);
+enum TimeOfDay TryIncrementTimeOfDay(enum TimeOfDay timeOfDay);
+enum TimeOfDay TryDecrementTimeOfDay(enum TimeOfDay timeOfDay);
 
 #endif // GUARD_RTC_UTIL_H
diff --git a/include/wild_encounter.h b/include/wild_encounter.h
index c7abb72aa1..0edf396164 100644
--- a/include/wild_encounter.h
+++ b/include/wild_encounter.h
@@ -1,8 +1,19 @@
 #ifndef GUARD_WILD_ENCOUNTER_H
 #define GUARD_WILD_ENCOUNTER_H
 
+#include "rtc.h"
 #include "constants/wild_encounter.h"
 
+#define HEADER_NONE 0xFFFF
+
+enum WildPokemonArea {
+    WILD_AREA_LAND,
+    WILD_AREA_WATER,
+    WILD_AREA_ROCKS,
+    WILD_AREA_FISHING,
+    WILD_AREA_HIDDEN
+};
+
 struct WildPokemon
 {
     u8 minLevel;
@@ -16,17 +27,28 @@ struct WildPokemonInfo
     const struct WildPokemon *wildPokemon;
 };
 
+struct WildEncounterTypes
+{
+    const struct WildPokemonInfo *landMonsInfo;
+    const struct WildPokemonInfo *waterMonsInfo;
+    const struct WildPokemonInfo *rockSmashMonsInfo;
+    const struct WildPokemonInfo *fishingMonsInfo;
+    const struct WildPokemonInfo *hiddenMonsInfo;
+};
+
 struct WildPokemonHeader
 {
     u8 mapGroup;
     u8 mapNum;
-    const struct WildPokemonInfo *landMonsInfo;
-    const struct WildPokemonInfo *waterMonsInfo;
-    const struct WildPokemonInfo *rockSmashMonsInfo;
-    const struct WildPokemonInfo *hiddenMonsInfo;
-    const struct WildPokemonInfo *fishingMonsInfo;
+
+#if OW_TIME_OF_DAY_ENCOUNTERS
+    const struct WildEncounterTypes encounterTypes[TIMES_OF_DAY_COUNT];
+#else
+    const struct WildEncounterTypes encounterTypes[1];
+#endif
 };
 
+
 extern const struct WildPokemonHeader gWildMonHeaders[];
 extern bool8 gIsFishingEncounter;
 extern bool8 gIsSurfingEncounter;
@@ -50,5 +72,6 @@ u8 ChooseWildMonIndex_Land(void);
 u8 ChooseWildMonIndex_WaterRock(void);
 u8 ChooseHiddenMonIndex(void);
 bool32 MapHasNoEncounterData(void);
+enum TimeOfDay GetTimeOfDayForEncounters(u32 headerId, enum WildPokemonArea area);
 
 #endif // GUARD_WILD_ENCOUNTER_H
diff --git a/include/window.h b/include/window.h
index 2fd0bddb20..2dd67b123f 100644
--- a/include/window.h
+++ b/include/window.h
@@ -52,6 +52,7 @@ bool32 InitWindows(const struct WindowTemplate *templates);
 u32 AddWindow(const struct WindowTemplate *template);
 int AddWindowWithoutTileMap(const struct WindowTemplate *template);
 void RemoveWindow(u32 windowId);
+void RemoveAllWindowsOnBg(u32 bgId);
 void FreeAllWindowBuffers(void);
 void CopyWindowToVram(u32 windowId, u32 mode);
 void CopyWindowRectToVram(u32 windowId, u32 mode, u32 x, u32 y, u32 w, u32 h);
diff --git a/json_data_rules.mk b/json_data_rules.mk
index aa9e5b3a25..1969496b0e 100755
--- a/json_data_rules.mk
+++ b/json_data_rules.mk
@@ -1,12 +1,6 @@
 # JSON files are run through jsonproc, which is a tool that converts JSON data to an output file
 # based on an Inja template. https://github.com/pantor/inja
 
-AUTO_GEN_TARGETS += $(DATA_SRC_SUBDIR)/wild_encounters.h
-$(DATA_SRC_SUBDIR)/wild_encounters.h: $(DATA_SRC_SUBDIR)/wild_encounters.json $(DATA_SRC_SUBDIR)/wild_encounters.json.txt
-	$(JSONPROC) $^ $@
-
-$(C_BUILDDIR)/wild_encounter.o: c_dep += $(DATA_SRC_SUBDIR)/wild_encounters.h
-
 AUTO_GEN_TARGETS += $(DATA_SRC_SUBDIR)/region_map/region_map_entries.h
 $(DATA_SRC_SUBDIR)/region_map/region_map_entries.h: $(DATA_SRC_SUBDIR)/region_map/region_map_sections.json $(DATA_SRC_SUBDIR)/region_map/region_map_sections.json.txt
 	$(JSONPROC) $^ $@
diff --git a/migration_scripts/add_time_based_encounters.py b/migration_scripts/add_time_based_encounters.py
new file mode 100644
index 0000000000..c26d86019e
--- /dev/null
+++ b/migration_scripts/add_time_based_encounters.py
@@ -0,0 +1,97 @@
+import json
+import sys
+import os
+
+"""
+- you can change/add to these if you're adding seasons/days of the week, etc
+- if you're just adding times of the day, make sure they are in the same order
+as the `TimeOfDay` enum in include/rtc.h.
+- you don't need to add an entry for `TIMES_OF_DAY_COUNT`
+"""
+ENCOUNTER_GROUP_SUFFIX = [
+    "Morning",
+    "Day",
+    "Evening",
+    "Night"
+]
+
+ARGS = [
+    "--copy",
+]
+
+"""
+- make sure this number is the same as `OW_TIME_OF_DAY_DEFAULT` in config/overworld.h.
+- by default in config/overworld.h it is set to `TIME_MORNING`, which is 0 in the
+`TimeOfDay` enum in include/rtc.h
+"""
+OW_TIME_OF_DAY_DEFAULT = 0
+
+
+def GetWildEncounterFile():
+    if not os.path.exists("Makefile"):
+        print("Please run this script from the project's root folder.")
+        quit()
+
+    wFile = open("src/data/wild_encounters.json")
+    wData = json.load(wFile)
+
+    wBackupData = json.dumps(wData, indent=2)
+    wBackupFile = open("src/data/wild_encounters.json.bak", mode="w", encoding="utf-8")
+    wBackupFile.write(wBackupData)
+
+    global COPY_FULL_ENCOUNTER
+    COPY_FULL_ENCOUNTER = False
+
+    for arg in ARGS:
+        if len(sys.argv) > 1:
+            if arg in sys.argv[1:3]:
+                if arg == ARGS[0]:
+                    COPY_FULL_ENCOUNTER = True
+
+    j = 0
+    for group in wData["wild_encounter_groups"]:
+        wEncounters = wData["wild_encounter_groups"][j]["encounters"]
+        editMap = True
+
+        wEncounters_New = list()
+        for map in wEncounters:
+            for suffix in ENCOUNTER_GROUP_SUFFIX:
+                tempSuffix = "_" + suffix
+                if tempSuffix in map["base_label"]:
+                    editMap = False
+                    break
+                else: 
+                    editMap = True
+
+            if editMap:
+                k = 0
+                for suffix in ENCOUNTER_GROUP_SUFFIX:
+                    tempDict = dict()
+                    if k == OW_TIME_OF_DAY_DEFAULT or COPY_FULL_ENCOUNTER:
+                        tempDict = map.copy()
+
+                    tempMapLabel = ""
+                    if "map" in map:
+                        tempMapLabel = map["map"]
+                        tempDict["map"] = tempMapLabel
+
+                    tempLabel = map["base_label"] + "_" + suffix
+                    tempDict["base_label"] = tempLabel
+                    wEncounters_New.append(tempDict)
+                    if map["base_label"] in wEncounters_New:
+                        wEncounters_New[map["base_label"]].pop()
+
+                    print(tempLabel + " added")
+                    k += 1
+            else:
+                wEncounters_New.append(map.copy())
+
+        wData["wild_encounter_groups"][j]["encounters"] = wEncounters_New
+        j += 1
+
+    wNewData = json.dumps(wData, indent=2)
+    wNewFile = open("src/data/wild_encounters.json", mode="w", encoding="utf-8")
+    wNewFile.write(wNewData)
+
+
+GetWildEncounterFile()
diff --git a/src/dexnav.c b/src/dexnav.c
index 1e3db82d4b..52836bad75 100644
--- a/src/dexnav.c
+++ b/src/dexnav.c
@@ -36,6 +36,7 @@
 #include "pokemon_summary_screen.h"
 #include "random.h"
 #include "region_map.h"
+#include "rtc.h"
 #include "scanline_effect.h"
 #include "script.h"
 #include "script_pokemon_util.h"
@@ -1515,10 +1516,8 @@ static u8 DexNavGeneratePotential(u8 searchLevel)
 
 static u8 GetEncounterLevelFromMapData(u16 species, u8 environment)
 {
-    u16 headerId = GetCurrentMapWildMonHeaderId();
-    const struct WildPokemonInfo *landMonsInfo = gWildMonHeaders[headerId].landMonsInfo;
-    const struct WildPokemonInfo *waterMonsInfo = gWildMonHeaders[headerId].waterMonsInfo;
-    const struct WildPokemonInfo *hiddenMonsInfo = gWildMonHeaders[headerId].hiddenMonsInfo;
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    enum TimeOfDay timeOfDay;
     u8 min = 100;
     u8 max = 0;
     u8 i;
@@ -1526,6 +1525,9 @@ static u8 GetEncounterLevelFromMapData(u16 species, u8 environment)
     switch (environment)
     {
     case ENCOUNTER_TYPE_LAND:    // grass
+        timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+        const struct WildPokemonInfo *landMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
+
         if (landMonsInfo == NULL)
             return MON_LEVEL_NONEXISTENT; //Hidden pokemon should only appear on walkable tiles or surf tiles
 
@@ -1539,6 +1541,9 @@ static u8 GetEncounterLevelFromMapData(u16 species, u8 environment)
         }
         break;
     case ENCOUNTER_TYPE_WATER:    //water
+        timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+        const struct WildPokemonInfo *waterMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
+
         if (waterMonsInfo == NULL)
             return MON_LEVEL_NONEXISTENT; //Hidden pokemon should only appear on walkable tiles or surf tiles
 
@@ -1552,6 +1557,9 @@ static u8 GetEncounterLevelFromMapData(u16 species, u8 environment)
         }
         break;
     case ENCOUNTER_TYPE_HIDDEN:
+        timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_HIDDEN);
+        const struct WildPokemonInfo *hiddenMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
+
         if (hiddenMonsInfo == NULL)
             return MON_LEVEL_NONEXISTENT;
 
@@ -1724,11 +1732,13 @@ static void CreateNoDataIcon(s16 x, s16 y)
     CreateSprite(&sNoDataIconTemplate, x, y, 0);
 }
 
-static bool8 CapturedAllLandMons(u16 headerId)
+static bool8 CapturedAllLandMons(u32 headerId)
 {
     u16 i, species;
     int count = 0;
-    const struct WildPokemonInfo* landMonsInfo = gWildMonHeaders[headerId].landMonsInfo;
+    enum TimeOfDay timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+    
+    const struct WildPokemonInfo* landMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
 
     if (landMonsInfo != NULL)
     {
@@ -1756,12 +1766,14 @@ static bool8 CapturedAllLandMons(u16 headerId)
 }
 
 //Checks if all Pokemon that can be encountered while surfing have been capture
-static bool8 CapturedAllWaterMons(u16 headerId)
+static bool8 CapturedAllWaterMons(u32 headerId)
 {
     u32 i;
     u16 species;
     u8 count = 0;
-    const struct WildPokemonInfo* waterMonsInfo = gWildMonHeaders[headerId].waterMonsInfo;
+    enum TimeOfDay timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+
+    const struct WildPokemonInfo* waterMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
 
     if (waterMonsInfo != NULL)
     {
@@ -1787,13 +1799,15 @@ static bool8 CapturedAllWaterMons(u16 headerId)
     return FALSE;
 }
 
-static bool8 CapturedAllHiddenMons(u16 headerId)
+static bool8 CapturedAllHiddenMons(u32 headerId)
 {
     u32 i;
     u16 species;
     u8 count = 0;
-    const struct WildPokemonInfo* hiddenMonsInfo = gWildMonHeaders[headerId].hiddenMonsInfo;
+    enum TimeOfDay timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_HIDDEN);
 
+        const struct WildPokemonInfo* hiddenMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
+        
     if (hiddenMonsInfo != NULL)
     {
         for (i = 0; i < HIDDEN_WILD_COUNT; ++i)
@@ -1820,7 +1834,7 @@ static bool8 CapturedAllHiddenMons(u16 headerId)
 
 static void DexNavLoadCapturedAllSymbols(void)
 {
-    u16 headerId = GetCurrentMapWildMonHeaderId();
+    u32 headerId = GetCurrentMapWildMonHeaderId();
 
     LoadCompressedSpriteSheetUsingHeap(&sCapturedAllPokemonSpriteSheet);
 
@@ -1936,11 +1950,16 @@ static void DexNavLoadEncounterData(void)
     u8 hiddenIndex = 0;
     u16 species;
     u32 i;
-    u16 headerId = GetCurrentMapWildMonHeaderId();
-    const struct WildPokemonInfo* landMonsInfo = gWildMonHeaders[headerId].landMonsInfo;
-    const struct WildPokemonInfo* waterMonsInfo = gWildMonHeaders[headerId].waterMonsInfo;
-    const struct WildPokemonInfo* hiddenMonsInfo = gWildMonHeaders[headerId].hiddenMonsInfo;
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    enum TimeOfDay timeOfDay;
 
+    timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+    const struct WildPokemonInfo* landMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
+    timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+    const struct WildPokemonInfo* waterMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
+    timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_HIDDEN);
+    const struct WildPokemonInfo* hiddenMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
+    
     // nop struct data
     memset(sDexNavUiDataPtr->landSpecies, 0, sizeof(sDexNavUiDataPtr->landSpecies));
     memset(sDexNavUiDataPtr->waterSpecies, 0, sizeof(sDexNavUiDataPtr->waterSpecies));
@@ -2509,12 +2528,14 @@ bool8 TryFindHiddenPokemon(void)
     if ((*stepPtr) == 0 && (Random() % 100 < HIDDEN_MON_SEARCH_RATE))
     {
         // hidden pokemon
-        u16 headerId = GetCurrentMapWildMonHeaderId();
+        u32 headerId = GetCurrentMapWildMonHeaderId();
         u8 index;
         u16 species;
         u8 environment;
         u8 taskId;
-        const struct WildPokemonInfo* hiddenMonsInfo = gWildMonHeaders[headerId].hiddenMonsInfo;
+        enum TimeOfDay timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_HIDDEN);
+        
+        const struct WildPokemonInfo* hiddenMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
         bool8 isHiddenMon = FALSE;
 
         // while you can still technically find hidden pokemon if there are not hidden-only pokemon on a map,
@@ -2539,7 +2560,7 @@ bool8 TryFindHiddenPokemon(void)
             }
             else
             {
-                species = gWildMonHeaders[headerId].landMonsInfo->wildPokemon[ChooseWildMonIndex_Land()].species;
+                species = gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo->wildPokemon[ChooseWildMonIndex_Land()].species;
                 environment = ENCOUNTER_TYPE_LAND;
             }
             break;
@@ -2557,7 +2578,7 @@ bool8 TryFindHiddenPokemon(void)
                 }
                 else
                 {
-                    species = gWildMonHeaders[headerId].waterMonsInfo->wildPokemon[ChooseWildMonIndex_WaterRock()].species;
+                    species = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo->wildPokemon[ChooseWildMonIndex_WaterRock()].species;
                     environment = ENCOUNTER_TYPE_WATER;
 
                 }
diff --git a/src/match_call.c b/src/match_call.c
index ea2ab8ed46..4d937381b5 100644
--- a/src/match_call.c
+++ b/src/match_call.c
@@ -1752,6 +1752,7 @@ static void PopulateSpeciesFromTrainerLocation(int matchCallId, u8 *destStr)
     int numSpecies;
     u8 slot;
     int i = 0;
+    enum TimeOfDay timeOfDay;
 
     if (gWildMonHeaders[i].mapGroup != MAP_GROUP(UNDEFINED)) // ??? This check is nonsense.
     {
@@ -1766,18 +1767,20 @@ static void PopulateSpeciesFromTrainerLocation(int matchCallId, u8 *destStr)
 
         if (gWildMonHeaders[i].mapGroup != MAP_GROUP(UNDEFINED))
         {
+            timeOfDay = GetTimeOfDayForEncounters(i, WILD_AREA_LAND);
             numSpecies = 0;
-            if (gWildMonHeaders[i].landMonsInfo)
+            if (gWildMonHeaders[i].encounterTypes[timeOfDay].landMonsInfo)
             {
                 slot = GetLandEncounterSlot();
-                species[numSpecies] = gWildMonHeaders[i].landMonsInfo->wildPokemon[slot].species;
+                species[numSpecies] = gWildMonHeaders[i].encounterTypes[timeOfDay].landMonsInfo->wildPokemon[slot].species;
                 numSpecies++;
             }
 
-            if (gWildMonHeaders[i].waterMonsInfo)
+            timeOfDay = GetTimeOfDayForEncounters(i, WILD_AREA_WATER);
+            if (gWildMonHeaders[i].encounterTypes[timeOfDay].waterMonsInfo)
             {
                 slot = GetWaterEncounterSlot();
-                species[numSpecies] = gWildMonHeaders[i].waterMonsInfo->wildPokemon[slot].species;
+                species[numSpecies] = gWildMonHeaders[i].encounterTypes[timeOfDay].waterMonsInfo->wildPokemon[slot].species;
                 numSpecies++;
             }
 
diff --git a/src/pokedex.c b/src/pokedex.c
index 141ae3cdd2..31d60c55bc 100644
--- a/src/pokedex.c
+++ b/src/pokedex.c
@@ -17,6 +17,7 @@
 #include "pokedex_area_screen.h"
 #include "pokedex_cry_screen.h"
 #include "pokedex_plus_hgss.h"
+#include "rtc.h"
 #include "scanline_effect.h"
 #include "sound.h"
 #include "sprite.h"
@@ -255,7 +256,8 @@ static void Task_HandleInfoScreenInput(u8);
 static void Task_SwitchScreensFromInfoScreen(u8);
 static void Task_LoadInfoScreenWaitForFade(u8);
 static void Task_ExitInfoScreen(u8);
-static void Task_LoadAreaScreen(u8);
+static void Task_LoadAreaScreen(u8 taskId);
+static void Task_ReloadAreaScreen(u8 taskId);
 static void Task_WaitForAreaScreenInput(u8 taskId);
 static void Task_SwitchScreensFromAreaScreen(u8);
 static void Task_LoadCryScreen(u8);
@@ -3245,6 +3247,7 @@ static u8 LoadInfoScreen(struct PokedexListItem *item, u8 monSpriteId)
     u8 taskId;
 
     sPokedexListItem = item;
+    gAreaTimeOfDay = GetTimeOfDayForDex();
     taskId = CreateTask(Task_LoadInfoScreen, 0);
     gTasks[taskId].tScrolling = FALSE;
     gTasks[taskId].tMonSpriteDone = TRUE; // Already has sprite from list view
@@ -3552,7 +3555,7 @@ static void Task_LoadAreaScreen(u8 taskId)
         gMain.state++;
         break;
     case 2:
-        ShowPokedexAreaScreen(NationalPokedexNumToSpecies(sPokedexListItem->dexNum), &sPokedexView->screenSwitchState);
+        DisplayPokedexAreaScreen(NationalPokedexNumToSpecies(sPokedexListItem->dexNum), &sPokedexView->screenSwitchState, gAreaTimeOfDay, DEX_SHOW_AREA_SCREEN);
         SetVBlankCallback(gPokedexVBlankCB);
         sPokedexView->screenSwitchState = 0;
         gMain.state = 0;
@@ -3561,6 +3564,29 @@ static void Task_LoadAreaScreen(u8 taskId)
     }
 }
 
+
+static void Task_ReloadAreaScreen(u8 taskId)
+{
+    switch (gMain.state)
+    {
+    case 0:
+    default:
+        sPokedexView->currentPage = PAGE_AREA;
+        gMain.state = 1;
+        break;
+    case 1:
+        LoadPokedexBgPalette(sPokedexView->isSearchResults);
+        SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(0) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(13) | BGCNT_16COLOR | BGCNT_TXT256x256);
+        gMain.state++;
+        break;
+    case 2:
+        DisplayPokedexAreaScreen(NationalPokedexNumToSpecies(sPokedexListItem->dexNum), &sPokedexView->screenSwitchState, gAreaTimeOfDay, DEX_UPDATE_AREA_SCREEN);
+        gMain.state = 0;
+        gTasks[taskId].func = Task_WaitForAreaScreenInput;
+        break;
+    }
+}
+
 static void Task_WaitForAreaScreenInput(u8 taskId)
 {
 // See Task_HandlePokedexAreaScreenInput() in pokedex_area_screen.c
@@ -3581,6 +3607,9 @@ static void Task_SwitchScreensFromAreaScreen(u8 taskId)
         case 2:
             gTasks[taskId].func = Task_LoadCryScreen;
             break;
+        case 3:
+            gTasks[taskId].func = Task_ReloadAreaScreen;
+            break;
         }
     }
 }
diff --git a/src/pokedex_area_screen.c b/src/pokedex_area_screen.c
index dd45335afb..93afc0af7a 100644
--- a/src/pokedex_area_screen.c
+++ b/src/pokedex_area_screen.c
@@ -3,6 +3,7 @@
 #include "event_data.h"
 #include "gpu_regs.h"
 #include "graphics.h"
+#include "international_string_util.h"
 #include "main.h"
 #include "malloc.h"
 #include "menu.h"
@@ -12,11 +13,15 @@
 #include "pokedex_area_screen.h"
 #include "region_map.h"
 #include "roamer.h"
+#include "rtc.h"
 #include "sound.h"
 #include "string_util.h"
+#include "text.h"
+#include "text_window.h"
 #include "trig.h"
 #include "pokedex_area_region_map.h"
 #include "wild_encounter.h"
+#include "window.h"
 #include "constants/region_map_sections.h"
 #include "constants/rgb.h"
 #include "constants/songs.h"
@@ -55,6 +60,15 @@
 #define MAX_AREA_HIGHLIGHTS 64 // Maximum number of rectangular route highlights
 #define MAX_AREA_MARKERS 32 // Maximum number of circular spot highlights
 
+#define LABEL_WINDOW_BG 1
+#define NUM_LABEL_WINDOWS 2
+
+enum PokedexAreaLabels
+{
+    DEX_AREA_LABEL_TIME_OF_DAY,
+    DEX_AREA_LABEL_AREA_UNKNOWN
+};
+
 struct OverworldArea
 {
     u8 mapGroup;
@@ -90,28 +104,41 @@ struct
     /*0xF70*/ u8 charBuffer[64];
     /*0xFB0*/ struct Sprite * areaUnknownSprites[3];
     /*0xFBC*/ u8 areaUnknownGraphicsBuffer[0x600];
+    /*0xFC0*/ u8 areaScreenLabelIds[NUM_LABEL_WINDOWS];
+    /*0xFC8*/ u8 areaState;
 } static EWRAM_DATA *sPokedexAreaScreen = NULL;
 
+EWRAM_DATA u8 gAreaTimeOfDay = 0;
+
 static void FindMapsWithMon(u16);
 static void BuildAreaGlowTilemap(void);
 static void SetAreaHasMon(u16, u16);
 static void SetSpecialMapHasMon(u16, u16);
 static u16 GetRegionMapSectionId(u8, u8);
-static bool8 MapHasSpecies(const struct WildPokemonHeader *, u16);
+static bool8 MapHasSpecies(const struct WildEncounterTypes *, u16);
 static bool8 MonListHasSpecies(const struct WildPokemonInfo *, u16, u16);
 static void DoAreaGlow(void);
-static void Task_ShowPokedexAreaScreen(u8);
+static void Task_ShowPokedexAreaScreen(u8 taskId);
+static void Task_UpdatePokedexAreaScreen(u8 taskId);
 static void CreateAreaMarkerSprites(void);
 static void LoadAreaUnknownGraphics(void);
 static void CreateAreaUnknownSprites(void);
 static void Task_HandlePokedexAreaScreenInput(u8);
 static void ResetPokedexAreaMapBg(void);
 static void DestroyAreaScreenSprites(void);
-static void LoadHGSSScreenSelectBarSubmenu(void);
+static void AddTimeOfDayLabels(void);
+static void ShowEncounterInfoLabel(void);
+static void ShowAreaUnknownLabel(void);
+static void PrintAreaLabelText(const u8 *text, enum PokedexAreaLabels labelId, int textXPos);
+static void ClearAreaWindowLabel(enum PokedexAreaLabels labelId);
+
+bool32 ShouldShowAreaUnknownLabel(void);
 
 static const u32 sAreaGlow_Pal[] = INCBIN_U32("graphics/pokedex/area_glow.gbapal");
 static const u32 sAreaGlow_Gfx[] = INCBIN_U32("graphics/pokedex/area_glow.4bpp.lz");
+
 static const u32 sPokedexPlusHGSS_ScreenSelectBarSubmenu_Tilemap[] = INCBIN_U32("graphics/pokedex/hgss/SelectBar.bin.lz");
+static void LoadHGSSScreenSelectBarSubmenu(void);
 
 static const u16 sSpeciesHiddenFromAreaScreen[] = { SPECIES_WYNAUT };
 
@@ -205,6 +232,32 @@ static const struct SpriteTemplate sAreaUnknownSpriteTemplate =
     .callback = SpriteCallbackDummy
 };
 
+static const u8 sFontColor_AreaInfo[3] = {TEXT_COLOR_TRANSPARENT, TEXT_COLOR_WHITE, 5};
+static const struct WindowTemplate sTimeOfDayWindowLabelTemplates[] =
+{
+    [DEX_AREA_LABEL_TIME_OF_DAY] =
+    {
+        .bg = LABEL_WINDOW_BG,
+        .tilemapLeft = 22,
+        .tilemapTop = 18,
+        .width = 8,
+        .height = 2,
+        .paletteNum = 0,
+        .baseBlock = 0x16C
+    },
+
+    [DEX_AREA_LABEL_AREA_UNKNOWN] = 
+    {
+        .bg = LABEL_WINDOW_BG,
+        .tilemapLeft = 12,
+        .tilemapTop = 18,
+        .width = 10,
+        .height = 2,
+        .paletteNum = 0,
+        .baseBlock = 0x240
+    }
+};
+
 static void ResetDrawAreaGlowState(void)
 {
     sPokedexAreaScreen->drawAreaGlowState = 0;
@@ -287,7 +340,7 @@ static void FindMapsWithMon(u16 species)
     // Add regular species to the area map
     for (i = 0; gWildMonHeaders[i].mapGroup != MAP_GROUP(UNDEFINED); i++)
     {
-        if (MapHasSpecies(&gWildMonHeaders[i], species))
+        if (MapHasSpecies(&gWildMonHeaders[i].encounterTypes[gAreaTimeOfDay], species))
         {
             switch (gWildMonHeaders[i].mapGroup)
             {
@@ -373,10 +426,13 @@ static u16 GetRegionMapSectionId(u8 mapGroup, u8 mapNum)
     return Overworld_GetMapHeaderByGroupAndId(mapGroup, mapNum)->regionMapSectionId;
 }
 
-static bool8 MapHasSpecies(const struct WildPokemonHeader *info, u16 species)
+static bool8 MapHasSpecies(const struct WildEncounterTypes *info, u16 species)
 {
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    u8 currentMapGroup = gWildMonHeaders[headerId].mapGroup;
+    u8 currentMapNum = gWildMonHeaders[headerId].mapNum;
     // If this is a header for Altering Cave, skip it if it's not the current Altering Cave encounter set
-    if (GetRegionMapSectionId(info->mapGroup, info->mapNum) == MAPSEC_ALTERING_CAVE)
+    if (GetRegionMapSectionId(currentMapGroup, currentMapNum) == MAPSEC_ALTERING_CAVE)
     {
         sPokedexAreaScreen->alteringCaveCounter++;
         if (sPokedexAreaScreen->alteringCaveCounter != sPokedexAreaScreen->alteringCaveId + 1)
@@ -576,17 +632,98 @@ static void DoAreaGlow(void)
     }
 }
 
+static const u8 *GetTimeOfDayTextWithButton(enum TimeOfDay timeOfDay)
+{
+    static const u8 gText_Morning[] = _("{DPAD_UPDOWN} MORNING");
+    static const u8 gText_Day[] = _("{DPAD_UPDOWN} DAY");
+    static const u8 gText_Evening[] = _("{DPAD_UPDOWN} EVENING");
+    static const u8 gText_Night[] = _("{DPAD_UPDOWN} NIGHT");
+
+    switch (gAreaTimeOfDay)
+    {
+    case TIME_MORNING:
+        return gText_Morning;
+    case TIME_EVENING:
+        return gText_Evening;
+    case TIME_NIGHT:
+        return gText_Night;
+    case TIME_DAY:
+    default:
+        return gText_Day;
+    }
+}
+
+static void AddTimeOfDayLabels(void)
+{
+    u32 i;
+
+    // clear the background before adding any more windows
+    RemoveAllWindowsOnBg(LABEL_WINDOW_BG);
+
+    for (i = 0; i < NUM_LABEL_WINDOWS; i ++)
+    {
+        sPokedexAreaScreen->areaScreenLabelIds[i] = AddWindow(&sTimeOfDayWindowLabelTemplates[i]);
+        FillWindowPixelBuffer(sPokedexAreaScreen->areaScreenLabelIds[i], PIXEL_FILL(0));
+    }
+}
+
+static void ShowEncounterInfoLabel(void)
+{
+    const u8 *gText_TimeOfDay = GetTimeOfDayTextWithButton(gAreaTimeOfDay);
+    int stringXPos = GetStringCenterAlignXOffset(FONT_NORMAL, gText_TimeOfDay, 64);
+
+    PrintAreaLabelText(gText_TimeOfDay, DEX_AREA_LABEL_TIME_OF_DAY, stringXPos);
+}
+
+static void ShowAreaUnknownLabel(void)
+{
+    static const u8 gText_AreaUnknown[] = _("AREA UNKNOWN");
+    int stringXPos = GetStringCenterAlignXOffset(FONT_NORMAL, gText_AreaUnknown, 80);
+
+    PrintAreaLabelText(gText_AreaUnknown, DEX_AREA_LABEL_AREA_UNKNOWN, stringXPos);
+}
+
+static void ClearAreaWindowLabel(enum PokedexAreaLabels labelId)
+{
+    FillWindowPixelBuffer(sPokedexAreaScreen->areaScreenLabelIds[labelId], PIXEL_FILL(0));
+    ClearWindowTilemap(sPokedexAreaScreen->areaScreenLabelIds[labelId]);
+    ScheduleBgCopyTilemapToVram(0);
+}
+
+static void PrintAreaLabelText(const u8 *text, enum PokedexAreaLabels labelId, int textXPos)
+{
+    ClearAreaWindowLabel(labelId);
+
+    PutWindowTilemap(sPokedexAreaScreen->areaScreenLabelIds[labelId]);
+    FillWindowPixelBuffer(sPokedexAreaScreen->areaScreenLabelIds[labelId], PIXEL_FILL(7));
+
+    AddTextPrinterParameterized4(sPokedexAreaScreen->areaScreenLabelIds[labelId], FONT_NORMAL, textXPos, 0, 0, 0, sFontColor_AreaInfo, TEXT_SKIP_DRAW, text);
+    CopyWindowToVram(sPokedexAreaScreen->areaScreenLabelIds[labelId], COPYWIN_FULL);
+}
+
+bool32 ShouldShowAreaUnknownLabel(void)
+{
+    return !sPokedexAreaScreen->numOverworldAreas && !sPokedexAreaScreen->numSpecialAreas;
+}
+
 #define tState data[0]
 
-void ShowPokedexAreaScreen(u16 species, u8 *screenSwitchState)
+void DisplayPokedexAreaScreen(u16 species, u8 *screenSwitchState, enum TimeOfDay timeOfDay, enum PokedexAreaScreenState areaState)
 {
     u8 taskId;
 
     sPokedexAreaScreen = AllocZeroed(sizeof(*sPokedexAreaScreen));
     sPokedexAreaScreen->species = species;
     sPokedexAreaScreen->screenSwitchState = screenSwitchState;
+    sPokedexAreaScreen->areaState = areaState;
+    gAreaTimeOfDay = timeOfDay;
     screenSwitchState[0] = 0;
-    taskId = CreateTask(Task_ShowPokedexAreaScreen, 0);
+
+    if (sPokedexAreaScreen->areaState == DEX_UPDATE_AREA_SCREEN)
+        taskId = CreateTask(Task_UpdatePokedexAreaScreen, 0);
+    else
+        taskId = CreateTask(Task_ShowPokedexAreaScreen, 0);
+
     gTasks[taskId].tState = 0;
 }
 
@@ -627,20 +764,29 @@ static void Task_ShowPokedexAreaScreen(u8 taskId)
         CreateAreaMarkerSprites();
         break;
     case 7:
-        LoadAreaUnknownGraphics();
+        if(!OW_TIME_OF_DAY_ENCOUNTERS)
+            LoadAreaUnknownGraphics();
         break;
     case 8:
-        CreateAreaUnknownSprites();
+        if(!OW_TIME_OF_DAY_ENCOUNTERS)
+            CreateAreaUnknownSprites();
         break;
     case 9:
         BeginNormalPaletteFade(PALETTES_ALL & ~(0x14), 0, 16, 0, RGB_BLACK);
         break;
     case 10:
-        if (POKEDEX_PLUS_HGSS)
-            LoadHGSSScreenSelectBarSubmenu();
-
         SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_BG0 | BLDCNT_EFFECT_BLEND | BLDCNT_TGT2_BG0 | BLDCNT_TGT2_ALL);
         StartAreaGlow();
+        if (OW_TIME_OF_DAY_ENCOUNTERS)
+        {
+            AddTimeOfDayLabels();
+            ShowEncounterInfoLabel();
+            if (ShouldShowAreaUnknownLabel())
+                ShowAreaUnknownLabel();
+            DoScheduledBgTilemapCopiesToVram();
+        }
+        if (POKEDEX_PLUS_HGSS)
+            LoadHGSSScreenSelectBarSubmenu();
         ShowBg(2);
         ShowBg(3); // TryShowPokedexAreaMap will have done this already
         SetGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON);
@@ -654,6 +800,58 @@ static void Task_ShowPokedexAreaScreen(u8 taskId)
     gTasks[taskId].tState++;
 }
 
+static void Task_UpdatePokedexAreaScreen(u8 taskId)
+{
+    switch (gTasks[taskId].tState)
+    {
+    case 0:
+        ClearAreaWindowLabel(DEX_AREA_LABEL_TIME_OF_DAY);
+        ClearAreaWindowLabel(DEX_AREA_LABEL_AREA_UNKNOWN);
+        ResetSpriteData();
+        FreeAllSpritePalettes();
+        ResetDrawAreaGlowState();
+        HideBg(2);
+        HideBg(0);
+        break;
+    case 1:
+        SetBgAttribute(3, BG_ATTR_CHARBASEINDEX, 3);
+        LoadPokedexAreaMapGfx(&sPokedexAreaMapTemplate);
+        PokedexAreaMapChangeBgY(-8);
+        StringFill(sPokedexAreaScreen->charBuffer, CHAR_SPACE, 16);
+        break;
+    case 2:
+        if (TryShowPokedexAreaMap() == TRUE)
+            return;
+        break;
+    case 3:
+        if (DrawAreaGlow())
+            return;
+        break;
+    case 4:
+        ShowRegionMapForPokedexAreaScreen(&sPokedexAreaScreen->regionMap);
+        CreateRegionMapPlayerIcon(1, 1);
+        PokedexAreaScreen_UpdateRegionMapVariablesAndVideoRegs(0, -8);
+        CreateAreaMarkerSprites();
+        break;
+    case 5:
+        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_BG0 | BLDCNT_EFFECT_BLEND | BLDCNT_TGT2_BG0 | BLDCNT_TGT2_ALL);
+        StartAreaGlow();
+        AddTimeOfDayLabels();
+        ShowEncounterInfoLabel();
+        if (ShouldShowAreaUnknownLabel())
+            ShowAreaUnknownLabel();
+        ShowBg(2);
+        SetGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON);
+        break;
+    case 6:
+        gTasks[taskId].func = Task_HandlePokedexAreaScreenInput;
+        gTasks[taskId].tState = 0;
+        return;
+    }
+
+    gTasks[taskId].tState++;
+}
+
 static void Task_HandlePokedexAreaScreenInput(u8 taskId)
 {
     DoAreaGlow();
@@ -687,16 +885,42 @@ static void Task_HandlePokedexAreaScreenInput(u8 taskId)
             gTasks[taskId].data[1] = 2;
             PlaySE(SE_DEX_PAGE);
         }
+        else if (JOY_NEW(DPAD_UP) && OW_TIME_OF_DAY_ENCOUNTERS == TRUE)
+        {
+            gTasks[taskId].data[1] = 3;
+            gAreaTimeOfDay = TryDecrementTimeOfDay(gAreaTimeOfDay);
+            sPokedexAreaScreen->areaState = DEX_UPDATE_AREA_SCREEN;
+            PlaySE(SE_DEX_PAGE);
+        }
+        else if (JOY_NEW(DPAD_DOWN) && OW_TIME_OF_DAY_ENCOUNTERS == TRUE)
+        {
+            gTasks[taskId].data[1] = 3;
+            gAreaTimeOfDay = TryIncrementTimeOfDay(gAreaTimeOfDay);
+            sPokedexAreaScreen->areaState = DEX_UPDATE_AREA_SCREEN;
+            PlaySE(SE_DEX_PAGE);
+        }
         else
+        {
+            // screen needs to fade if its doing anything except updating the area screen
+            sPokedexAreaScreen->areaState = DEX_SHOW_AREA_SCREEN;
             return;
+        }
         break;
     case 2:
-        BeginNormalPaletteFade(PALETTES_ALL & ~(0x14), 0, 0, 16, RGB_BLACK);
+        if (sPokedexAreaScreen->areaState != DEX_UPDATE_AREA_SCREEN)
+            BeginNormalPaletteFade(PALETTES_ALL & ~(0x14), 0, 0, 16, RGB_BLACK);
         break;
     case 3:
         if (gPaletteFade.active)
             return;
         DestroyAreaScreenSprites();
+        if (OW_TIME_OF_DAY_ENCOUNTERS)
+        {
+            ClearAreaWindowLabel(DEX_AREA_LABEL_TIME_OF_DAY);
+            ClearAreaWindowLabel(DEX_AREA_LABEL_AREA_UNKNOWN);
+            RemoveAllWindowsOnBg(LABEL_WINDOW_BG);
+        }
+            
         sPokedexAreaScreen->screenSwitchState[0] = gTasks[taskId].data[1];
         ResetPokedexAreaMapBg();
         DestroyTask(taskId);
@@ -755,13 +979,16 @@ static void DestroyAreaScreenSprites(void)
     for (i = 0; i < sPokedexAreaScreen->numAreaMarkerSprites; i++)
         DestroySprite(sPokedexAreaScreen->areaMarkerSprites[i]);
 
-    // Destroy "Area Unknown" sprites
-    FreeSpriteTilesByTag(TAG_AREA_UNKNOWN);
-    FreeSpritePaletteByTag(TAG_AREA_UNKNOWN);
-    for (i = 0; i < ARRAY_COUNT(sPokedexAreaScreen->areaUnknownSprites); i++)
+    if (!OW_TIME_OF_DAY_ENCOUNTERS)
     {
-        if (sPokedexAreaScreen->areaUnknownSprites[i])
-            DestroySprite(sPokedexAreaScreen->areaUnknownSprites[i]);
+        // Destroy "Area Unknown" sprites
+        FreeSpriteTilesByTag(TAG_AREA_UNKNOWN);
+        FreeSpritePaletteByTag(TAG_AREA_UNKNOWN);
+        for (i = 0; i < ARRAY_COUNT(sPokedexAreaScreen->areaUnknownSprites); i++)
+        {
+            if (sPokedexAreaScreen->areaUnknownSprites[i])
+                DestroySprite(sPokedexAreaScreen->areaUnknownSprites[i]);
+        }
     }
 }
 
diff --git a/src/pokedex_plus_hgss.c b/src/pokedex_plus_hgss.c
index d3e270d645..999bfd0b70 100644
--- a/src/pokedex_plus_hgss.c
+++ b/src/pokedex_plus_hgss.c
@@ -28,6 +28,7 @@
 #include "region_map.h"
 #include "pokemon.h"
 #include "reset_rtc_screen.h"
+#include "rtc.h"
 #include "scanline_effect.h"
 #include "shop.h"
 #include "sound.h"
@@ -526,7 +527,8 @@ static void Task_HandleInfoScreenInput(u8);
 static void Task_SwitchScreensFromInfoScreen(u8);
 static void Task_LoadInfoScreenWaitForFade(u8);
 static void Task_ExitInfoScreen(u8);
-static void Task_LoadAreaScreen(u8);
+static void Task_LoadAreaScreen(u8 taskId);
+static void Task_ReloadAreaScreen(u8 taskId);
 static void Task_WaitForAreaScreenInput(u8 taskId);
 static void Task_SwitchScreensFromAreaScreen(u8);
 static void Task_LoadCryScreen(u8);
@@ -3736,6 +3738,7 @@ static u8 LoadInfoScreen(struct PokedexListItem *item, u8 monSpriteId)
     u8 taskId;
 
     sPokedexListItem = item;
+    gAreaTimeOfDay = GetTimeOfDayForDex();
     taskId = CreateTask(Task_LoadInfoScreen, 0);
     gTasks[taskId].tScrolling = FALSE;
     gTasks[taskId].tMonSpriteDone = TRUE; // Already has sprite from list view
@@ -3994,7 +3997,7 @@ static void Task_LoadAreaScreen(u8 taskId)
         gMain.state++;
         break;
     case 2:
-        ShowPokedexAreaScreen(NationalPokedexNumToSpeciesHGSS(sPokedexListItem->dexNum), &sPokedexView->screenSwitchState);
+        DisplayPokedexAreaScreen(NationalPokedexNumToSpeciesHGSS(sPokedexListItem->dexNum), &sPokedexView->screenSwitchState, gAreaTimeOfDay, DEX_SHOW_AREA_SCREEN);
         SetVBlankCallback(gPokedexVBlankCB);
         sPokedexView->screenSwitchState = 0;
         gMain.state = 0;
@@ -4003,6 +4006,28 @@ static void Task_LoadAreaScreen(u8 taskId)
     }
 }
 
+static void Task_ReloadAreaScreen(u8 taskId)
+{
+    switch (gMain.state)
+    {
+    case 0:
+    default:
+        sPokedexView->currentPage = PAGE_AREA;
+        gMain.state = 1;
+        break;
+    case 1:
+        LoadPokedexBgPalette(sPokedexView->isSearchResults);
+        SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(0) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(13) | BGCNT_16COLOR | BGCNT_TXT256x256);
+        gMain.state++;
+        break;
+    case 2:
+        DisplayPokedexAreaScreen(NationalPokedexNumToSpeciesHGSS(sPokedexListItem->dexNum), &sPokedexView->screenSwitchState, gAreaTimeOfDay, DEX_UPDATE_AREA_SCREEN);
+        gMain.state = 0;
+        gTasks[taskId].func = Task_WaitForAreaScreenInput;
+        break;
+    }
+}
+
 static void Task_WaitForAreaScreenInput(u8 taskId)
 {
 // See Task_HandlePokedexAreaScreenInput() in pokedex_area_screen.c
@@ -4026,6 +4051,9 @@ static void Task_SwitchScreensFromAreaScreen(u8 taskId)
             else
                 gTasks[taskId].func = Task_LoadStatsScreen;
             break;
+        case 3:
+            gTasks[taskId].func = Task_ReloadAreaScreen;
+            break;
         }
     }
 }
diff --git a/src/rtc.c b/src/rtc.c
index e5a8b2d1df..eb7272c8c0 100644
--- a/src/rtc.c
+++ b/src/rtc.c
@@ -1,4 +1,6 @@
 #include "global.h"
+#include "battle_pike.h"
+#include "battle_pyramid.h"
 #include "rtc.h"
 #include "string_util.h"
 #include "strings.h"
@@ -325,7 +327,7 @@ bool8 IsBetweenHours(s32 hours, s32 begin, s32 end)
         return hours >= begin && hours < end;
 }
 
-u8 GetTimeOfDay(void)
+enum TimeOfDay GetTimeOfDay(void)
 {
     RtcCalcLocalTime();
     if (IsBetweenHours(gLocalTime.hours, MORNING_HOUR_BEGIN, MORNING_HOUR_END))
@@ -337,6 +339,11 @@ u8 GetTimeOfDay(void)
     return TIME_DAY;
 }
 
+enum TimeOfDay GetTimeOfDayForDex(void)
+{
+    return OW_TIME_OF_DAY_ENCOUNTERS ? GetTimeOfDay() : OW_TIME_OF_DAY_DEFAULT;
+}
+
 void RtcInitLocalTimeOffset(s32 hour, s32 minute)
 {
     RtcCalcLocalTimeOffset(0, hour, minute, 0);
@@ -418,3 +425,13 @@ void FormatDecimalTimeWithoutSeconds(u8 *txtPtr, s8 hour, s8 minute, bool32 is24
     *txtPtr++ = EOS;
     *txtPtr = EOS;
 }
+
+enum TimeOfDay TryIncrementTimeOfDay(enum TimeOfDay timeOfDay)
+{
+    return timeOfDay == TIME_NIGHT ? TIME_MORNING : timeOfDay + 1;
+}
+
+enum TimeOfDay TryDecrementTimeOfDay(enum TimeOfDay timeOfDay)
+{
+    return timeOfDay == TIME_MORNING ? TIME_NIGHT : timeOfDay - 1;
+}
diff --git a/src/wild_encounter.c b/src/wild_encounter.c
index bd00e58fcd..3a3a7d8dc7 100644
--- a/src/wild_encounter.c
+++ b/src/wild_encounter.c
@@ -37,25 +37,16 @@ extern const u8 EventScript_SprayWoreOff[];
 #define NUM_FISHING_SPOTS_3 149
 #define NUM_FISHING_SPOTS (NUM_FISHING_SPOTS_1 + NUM_FISHING_SPOTS_2 + NUM_FISHING_SPOTS_3)
 
-enum {
-    WILD_AREA_LAND,
-    WILD_AREA_WATER,
-    WILD_AREA_ROCKS,
-    WILD_AREA_FISHING,
-};
-
 #define WILD_CHECK_REPEL    (1 << 0)
 #define WILD_CHECK_KEEN_EYE (1 << 1)
 
-#define HEADER_NONE 0xFFFF
-
 static u16 FeebasRandom(void);
 static void FeebasSeedRng(u16 seed);
 static void UpdateChainFishingStreak();
 static bool8 IsWildLevelAllowedByRepel(u8 level);
 static void ApplyFluteEncounterRateMod(u32 *encRate);
 static void ApplyCleanseTagEncounterRateMod(u32 *encRate);
-static u8 GetMaxLevelOfSpeciesInWildTable(const struct WildPokemon *wildMon, u16 species, u8 area);
+static u8 GetMaxLevelOfSpeciesInWildTable(const struct WildPokemon *wildMon, u16 species, enum WildPokemonArea area);
 #ifdef BUGFIX
 static bool8 TryGetAbilityInfluencedWildMonIndex(const struct WildPokemon *wildMon, u8 type, u16 ability, u8 *monIndex, u32 size);
 #else
@@ -305,7 +296,7 @@ static u8 ChooseWildMonIndex_Fishing(u8 rod)
     return wildMonIndex;
 }
 
-static u8 ChooseWildMonLevel(const struct WildPokemon *wildPokemon, u8 wildMonIndex, u8 area)
+static u8 ChooseWildMonLevel(const struct WildPokemon *wildPokemon, u8 wildMonIndex, enum WildPokemonArea area)
 {
     u8 min;
     u8 max;
@@ -384,6 +375,87 @@ u16 GetCurrentMapWildMonHeaderId(void)
     return HEADER_NONE;
 }
 
+enum TimeOfDay GetTimeOfDayForEncounters(u32 headerId, enum WildPokemonArea area)
+{
+    const struct WildPokemonInfo *wildMonInfo;
+    enum TimeOfDay timeOfDay = GetTimeOfDay();
+
+    if (!OW_TIME_OF_DAY_ENCOUNTERS)
+        return OW_TIME_OF_DAY_DEFAULT;
+
+    if (InBattlePike()) 
+    {
+        switch (area)
+        {
+        default:
+        case WILD_AREA_LAND:
+            wildMonInfo = gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
+            break;
+        case WILD_AREA_WATER:
+            wildMonInfo = gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
+            break;
+        case WILD_AREA_ROCKS:
+            wildMonInfo = gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].rockSmashMonsInfo;
+            break;
+        case WILD_AREA_FISHING:
+            wildMonInfo = gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].fishingMonsInfo;
+            break;
+        case WILD_AREA_HIDDEN:
+            wildMonInfo = gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
+            break;
+        }
+    }
+    else if (InBattlePyramid())
+    {
+        switch (area)
+        {
+        default:
+        case WILD_AREA_LAND:
+            wildMonInfo = gBattlePyramidWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
+            break;
+        case WILD_AREA_WATER:
+            wildMonInfo = gBattlePyramidWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
+            break;
+        case WILD_AREA_ROCKS:
+            wildMonInfo = gBattlePyramidWildMonHeaders[headerId].encounterTypes[timeOfDay].rockSmashMonsInfo;
+            break;
+        case WILD_AREA_FISHING:
+            wildMonInfo = gBattlePyramidWildMonHeaders[headerId].encounterTypes[timeOfDay].fishingMonsInfo;
+            break;
+        case WILD_AREA_HIDDEN:
+            wildMonInfo = gBattlePyramidWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
+            break;
+        }
+    }
+    else 
+    {
+        switch (area)
+        {
+        default:
+        case WILD_AREA_LAND:
+            wildMonInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
+            break;
+        case WILD_AREA_WATER:
+            wildMonInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
+            break;
+        case WILD_AREA_ROCKS:
+            wildMonInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].rockSmashMonsInfo;
+            break;
+        case WILD_AREA_FISHING:
+            wildMonInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].fishingMonsInfo;
+            break;
+        case WILD_AREA_HIDDEN:
+            wildMonInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].hiddenMonsInfo;
+            break;
+        }
+    }
+
+    if (wildMonInfo == NULL && !OW_TIME_OF_DAY_DISABLE_FALLBACK) 
+        return OW_TIME_OF_DAY_FALLBACK;
+    else
+        return timeOfDay;
+}
+
 u8 PickWildMonNature(void)
 {
     u8 i;
@@ -459,7 +531,7 @@ void CreateWildMon(u16 species, u8 level)
 #define TRY_GET_ABILITY_INFLUENCED_WILD_MON_INDEX(wildPokemon, type, ability, ptr, count) TryGetAbilityInfluencedWildMonIndex(wildPokemon, type, ability, ptr)
 #endif
 
-static bool8 TryGenerateWildMon(const struct WildPokemonInfo *wildMonInfo, u8 area, u8 flags)
+static bool8 TryGenerateWildMon(const struct WildPokemonInfo *wildMonInfo, enum WildPokemonArea area, u8 flags)
 {
     u8 wildMonIndex = 0;
     u8 level;
@@ -501,6 +573,10 @@ static bool8 TryGenerateWildMon(const struct WildPokemonInfo *wildMonInfo, u8 ar
     case WILD_AREA_ROCKS:
         wildMonIndex = ChooseWildMonIndex_WaterRock();
         break;
+    default:
+    case WILD_AREA_FISHING:
+    case WILD_AREA_HIDDEN:
+        break;
     }
 
     level = ChooseWildMonLevel(wildMonInfo->wildPokemon, wildMonIndex, area);
@@ -621,7 +697,8 @@ static bool8 AreLegendariesInSootopolisPreventingEncounters(void)
 
 bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
 {
-    u16 headerId;
+    u32 headerId;
+    enum TimeOfDay timeOfDay;
     struct Roamer *roamer;
 
     if (sWildEncountersDisabled == TRUE)
@@ -633,11 +710,13 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
         if (gMapHeader.mapLayoutId == LAYOUT_BATTLE_FRONTIER_BATTLE_PIKE_ROOM_WILD_MONS)
         {
             headerId = GetBattlePikeWildMonHeaderId();
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+
             if (prevMetatileBehavior != curMetatileBehavior && !AllowWildCheckOnNewMetatile())
                 return FALSE;
-            else if (WildEncounterCheck(gBattlePikeWildMonHeaders[headerId].landMonsInfo->encounterRate, FALSE) != TRUE)
+            else if (WildEncounterCheck(gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo->encounterRate, FALSE) != TRUE)
                 return FALSE;
-            else if (TryGenerateWildMon(gBattlePikeWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_KEEN_EYE) != TRUE)
+            else if (TryGenerateWildMon(gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_KEEN_EYE) != TRUE)
                 return FALSE;
             else if (!TryGenerateBattlePikeWildMon(TRUE))
                 return FALSE;
@@ -648,11 +727,13 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
         if (gMapHeader.mapLayoutId == LAYOUT_BATTLE_FRONTIER_BATTLE_PYRAMID_FLOOR)
         {
             headerId = gSaveBlock2Ptr->frontier.curChallengeBattleNum;
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+
             if (prevMetatileBehavior != curMetatileBehavior && !AllowWildCheckOnNewMetatile())
                 return FALSE;
-            else if (WildEncounterCheck(gBattlePyramidWildMonHeaders[headerId].landMonsInfo->encounterRate, FALSE) != TRUE)
+            else if (WildEncounterCheck(gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo->encounterRate, FALSE) != TRUE)
                 return FALSE;
-            else if (TryGenerateWildMon(gBattlePyramidWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_KEEN_EYE) != TRUE)
+            else if (TryGenerateWildMon(gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_KEEN_EYE) != TRUE)
                 return FALSE;
 
             GenerateBattlePyramidWildMon();
@@ -664,11 +745,13 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
     {
         if (MetatileBehavior_IsLandWildEncounter(curMetatileBehavior) == TRUE)
         {
-            if (gWildMonHeaders[headerId].landMonsInfo == NULL)
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+
+            if (gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo == NULL)
                 return FALSE;
             else if (prevMetatileBehavior != curMetatileBehavior && !AllowWildCheckOnNewMetatile())
                 return FALSE;
-            else if (WildEncounterCheck(gWildMonHeaders[headerId].landMonsInfo->encounterRate, FALSE) != TRUE)
+            else if (WildEncounterCheck(gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo->encounterRate, FALSE) != TRUE)
                 return FALSE;
 
             if (TryStartRoamerEncounter())
@@ -689,12 +772,12 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
                 }
 
                 // try a regular wild land encounter
-                if (TryGenerateWildMon(gWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_REPEL | WILD_CHECK_KEEN_EYE) == TRUE)
+                if (TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_REPEL | WILD_CHECK_KEEN_EYE) == TRUE)
                 {
                     if (TryDoDoubleWildBattle())
                     {
                         struct Pokemon mon1 = gEnemyParty[0];
-                        TryGenerateWildMon(gWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_KEEN_EYE);
+                        TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, WILD_CHECK_KEEN_EYE);
                         gEnemyParty[1] = mon1;
                         BattleSetup_StartDoubleWildBattle();
                     }
@@ -711,13 +794,15 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
         else if (MetatileBehavior_IsWaterWildEncounter(curMetatileBehavior) == TRUE
                  || (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_SURFING) && MetatileBehavior_IsBridgeOverWater(curMetatileBehavior) == TRUE))
         {
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+
             if (AreLegendariesInSootopolisPreventingEncounters() == TRUE)
                 return FALSE;
-            else if (gWildMonHeaders[headerId].waterMonsInfo == NULL)
+            else if (gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo == NULL)
                 return FALSE;
             else if (prevMetatileBehavior != curMetatileBehavior && !AllowWildCheckOnNewMetatile())
                 return FALSE;
-            else if (WildEncounterCheck(gWildMonHeaders[headerId].waterMonsInfo->encounterRate, FALSE) != TRUE)
+            else if (WildEncounterCheck(gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo->encounterRate, FALSE) != TRUE)
                 return FALSE;
 
             if (TryStartRoamerEncounter())
@@ -731,13 +816,13 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
             }
             else // try a regular surfing encounter
             {
-                if (TryGenerateWildMon(gWildMonHeaders[headerId].waterMonsInfo, WILD_AREA_WATER, WILD_CHECK_REPEL | WILD_CHECK_KEEN_EYE) == TRUE)
+                if (TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo, WILD_AREA_WATER, WILD_CHECK_REPEL | WILD_CHECK_KEEN_EYE) == TRUE)
                 {
                     gIsSurfingEncounter = TRUE;
                     if (TryDoDoubleWildBattle())
                     {
                         struct Pokemon mon1 = gEnemyParty[0];
-                        TryGenerateWildMon(gWildMonHeaders[headerId].waterMonsInfo, WILD_AREA_WATER, WILD_CHECK_KEEN_EYE);
+                        TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo, WILD_AREA_WATER, WILD_CHECK_KEEN_EYE);
                         gEnemyParty[1] = mon1;
                         BattleSetup_StartDoubleWildBattle();
                     }
@@ -758,11 +843,14 @@ bool8 StandardWildEncounter(u16 curMetatileBehavior, u16 prevMetatileBehavior)
 
 void RockSmashWildEncounter(void)
 {
-    u16 headerId = GetCurrentMapWildMonHeaderId();
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    enum TimeOfDay timeOfDay;
 
     if (headerId != HEADER_NONE)
     {
-        const struct WildPokemonInfo *wildPokemonInfo = gWildMonHeaders[headerId].rockSmashMonsInfo;
+        timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_ROCKS);
+
+        const struct WildPokemonInfo *wildPokemonInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].rockSmashMonsInfo;
 
         if (wildPokemonInfo == NULL)
         {
@@ -788,7 +876,8 @@ void RockSmashWildEncounter(void)
 bool8 SweetScentWildEncounter(void)
 {
     s16 x, y;
-    u16 headerId;
+    u32 headerId;
+    enum TimeOfDay timeOfDay;
 
     PlayerGetDestCoords(&x, &y);
     headerId = GetCurrentMapWildMonHeaderId();
@@ -797,7 +886,9 @@ bool8 SweetScentWildEncounter(void)
         if (gMapHeader.mapLayoutId == LAYOUT_BATTLE_FRONTIER_BATTLE_PIKE_ROOM_WILD_MONS)
         {
             headerId = GetBattlePikeWildMonHeaderId();
-            if (TryGenerateWildMon(gBattlePikeWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, 0) != TRUE)
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+
+            if (TryGenerateWildMon(gBattlePikeWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, 0) != TRUE)
                 return FALSE;
 
             TryGenerateBattlePikeWildMon(FALSE);
@@ -807,7 +898,9 @@ bool8 SweetScentWildEncounter(void)
         if (gMapHeader.mapLayoutId == LAYOUT_BATTLE_FRONTIER_BATTLE_PYRAMID_FLOOR)
         {
             headerId = gSaveBlock2Ptr->frontier.curChallengeBattleNum;
-            if (TryGenerateWildMon(gBattlePyramidWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, 0) != TRUE)
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+
+            if (TryGenerateWildMon(gBattlePyramidWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, 0) != TRUE)
                 return FALSE;
 
             GenerateBattlePyramidWildMon();
@@ -819,7 +912,9 @@ bool8 SweetScentWildEncounter(void)
     {
         if (MetatileBehavior_IsLandWildEncounter(MapGridGetMetatileBehaviorAt(x, y)) == TRUE)
         {
-            if (gWildMonHeaders[headerId].landMonsInfo == NULL)
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+            
+            if (gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo == NULL)
                 return FALSE;
 
             if (TryStartRoamerEncounter())
@@ -831,16 +926,18 @@ bool8 SweetScentWildEncounter(void)
             if (DoMassOutbreakEncounterTest() == TRUE)
                 SetUpMassOutbreakEncounter(0);
             else
-                TryGenerateWildMon(gWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, 0);
+                TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, 0);
 
             BattleSetup_StartWildBattle();
             return TRUE;
         }
         else if (MetatileBehavior_IsWaterWildEncounter(MapGridGetMetatileBehaviorAt(x, y)) == TRUE)
         {
+            timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+
             if (AreLegendariesInSootopolisPreventingEncounters() == TRUE)
                 return FALSE;
-            if (gWildMonHeaders[headerId].waterMonsInfo == NULL)
+            if (gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo == NULL)
                 return FALSE;
 
             if (TryStartRoamerEncounter())
@@ -849,7 +946,7 @@ bool8 SweetScentWildEncounter(void)
                 return TRUE;
             }
 
-            TryGenerateWildMon(gWildMonHeaders[headerId].waterMonsInfo, WILD_AREA_WATER, 0);
+            TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo, WILD_AREA_WATER, 0);
             BattleSetup_StartWildBattle();
             return TRUE;
         }
@@ -860,9 +957,10 @@ bool8 SweetScentWildEncounter(void)
 
 bool8 DoesCurrentMapHaveFishingMons(void)
 {
-    u16 headerId = GetCurrentMapWildMonHeaderId();
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    enum TimeOfDay timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_FISHING);
 
-    if (headerId != HEADER_NONE && gWildMonHeaders[headerId].fishingMonsInfo != NULL)
+    if (headerId != HEADER_NONE && gWildMonHeaders[headerId].encounterTypes[timeOfDay].fishingMonsInfo != NULL)
         return TRUE;
     else
         return FALSE;
@@ -887,6 +985,8 @@ static void UpdateChainFishingStreak()
 void FishingWildEncounter(u8 rod)
 {
     u16 species;
+    u32 headerId;
+    enum TimeOfDay timeOfDay;
 
     gIsFishingEncounter = TRUE;
     if (CheckFeebas() == TRUE)
@@ -898,7 +998,9 @@ void FishingWildEncounter(u8 rod)
     }
     else
     {
-        species = GenerateFishingWildMon(gWildMonHeaders[GetCurrentMapWildMonHeaderId()].fishingMonsInfo, rod);
+        headerId = GetCurrentMapWildMonHeaderId();
+        timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_FISHING);
+        species = GenerateFishingWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].fishingMonsInfo, rod);
     }
 
     IncrementGameStat(GAME_STAT_FISHING_ENCOUNTERS);
@@ -908,7 +1010,8 @@ void FishingWildEncounter(u8 rod)
 
 u16 GetLocalWildMon(bool8 *isWaterMon)
 {
-    u16 headerId;
+    u32 headerId;
+    enum TimeOfDay timeOfDay;
     const struct WildPokemonInfo *landMonsInfo;
     const struct WildPokemonInfo *waterMonsInfo;
 
@@ -916,8 +1019,13 @@ u16 GetLocalWildMon(bool8 *isWaterMon)
     headerId = GetCurrentMapWildMonHeaderId();
     if (headerId == HEADER_NONE)
         return SPECIES_NONE;
-    landMonsInfo = gWildMonHeaders[headerId].landMonsInfo;
-    waterMonsInfo = gWildMonHeaders[headerId].waterMonsInfo;
+
+    timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+    landMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo;
+
+    timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+    waterMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
+
     // Neither
     if (landMonsInfo == NULL && waterMonsInfo == NULL)
         return SPECIES_NONE;
@@ -944,11 +1052,14 @@ u16 GetLocalWildMon(bool8 *isWaterMon)
 
 u16 GetLocalWaterMon(void)
 {
-    u16 headerId = GetCurrentMapWildMonHeaderId();
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    enum TimeOfDay timeOfDay;
 
     if (headerId != HEADER_NONE)
     {
-        const struct WildPokemonInfo *waterMonsInfo = gWildMonHeaders[headerId].waterMonsInfo;
+        timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_WATER);
+
+        const struct WildPokemonInfo *waterMonsInfo = gWildMonHeaders[headerId].encounterTypes[timeOfDay].waterMonsInfo;
 
         if (waterMonsInfo)
             return waterMonsInfo->wildPokemon[ChooseWildMonIndex_WaterRock()].species;
@@ -1053,7 +1164,7 @@ static bool8 TryGetRandomWildMonIndexByType(const struct WildPokemon *wildMon, u
 
 #include "data.h"
 
-static u8 GetMaxLevelOfSpeciesInWildTable(const struct WildPokemon *wildMon, u16 species, u8 area)
+static u8 GetMaxLevelOfSpeciesInWildTable(const struct WildPokemon *wildMon, u16 species, enum WildPokemonArea area)
 {
     u8 i, maxLevel = 0, numMon = 0;
 
@@ -1068,6 +1179,9 @@ static u8 GetMaxLevelOfSpeciesInWildTable(const struct WildPokemon *wildMon, u16
     case WILD_AREA_ROCKS:
         numMon = ROCK_WILD_COUNT;
         break;
+    default:
+    case WILD_AREA_FISHING:
+    case WILD_AREA_HIDDEN:
     }
 
     for (i = 0; i < numMon; i++)
@@ -1127,8 +1241,10 @@ bool8 TryDoDoubleWildBattle(void)
 
 bool8 StandardWildEncounter_Debug(void)
 {
-    u16 headerId = GetCurrentMapWildMonHeaderId();
-    if (TryGenerateWildMon(gWildMonHeaders[headerId].landMonsInfo, WILD_AREA_LAND, 0) != TRUE)
+    u32 headerId = GetCurrentMapWildMonHeaderId();
+    enum TimeOfDay timeOfDay = GetTimeOfDayForEncounters(headerId, WILD_AREA_LAND);
+
+    if (TryGenerateWildMon(gWildMonHeaders[headerId].encounterTypes[timeOfDay].landMonsInfo, WILD_AREA_LAND, 0) != TRUE)
         return FALSE;
 
     DoStandardWildBattle_Debug();
diff --git a/src/window.c b/src/window.c
index ec998083a0..850b83d4fc 100644
--- a/src/window.c
+++ b/src/window.c
@@ -240,6 +240,20 @@ void RemoveWindow(u32 windowId)
     }
 }
 
+void RemoveAllWindowsOnBg(u32 bgId)
+{
+    u32 i;
+
+    if (bgId > NUM_BACKGROUNDS)
+        return;
+
+    for (i = 0; i < WINDOWS_MAX; i++)
+    {
+        if (gWindows[i].window.bg == bgId)
+            RemoveWindow(i);
+    }
+}
+
 void FreeAllWindowBuffers(void)
 {
     int i;
diff --git a/tools/wild_encounters/wild_encounters_to_header.py b/tools/wild_encounters/wild_encounters_to_header.py
new file mode 100644
index 0000000000..0ea958de9c
--- /dev/null
+++ b/tools/wild_encounters/wild_encounters_to_header.py
@@ -0,0 +1,673 @@
+import json
+import re
+import os
+
+
+IS_ENABLED            = False
+
+# C string vars
+define                = "#define"
+ENCOUNTER_CHANCE      = "ENCOUNTER_CHANCE"
+SLOT                  = "SLOT"
+TOTAL                 = "TOTAL"
+NULL                  = "NULL"
+UNDEFINED             = "UNDEFINED"
+MAP_UNDEFINED         = "MAP_UNDEFINED"
+
+# encounter group header types, filled out programmatically
+MON_HEADERS = []
+
+# mon encounter group types
+LAND_MONS             = "land_mons"
+LAND_MONS_LABEL       = "LandMons"
+LAND_MONS_INDEX       = 0
+WATER_MONS            = "water_mons"
+WATER_MONS_LABEL      = "WaterMons"
+WATER_MONS_INDEX      = 1
+ROCK_SMASH_MONS       = "rock_smash_mons"
+ROCK_SMASH_MONS_LABEL = "RockSmashMons"
+ROCK_SMASH_MONS_INDEX = 2
+FISHING_MONS          = "fishing_mons"
+FISHING_MONS_LABEL    = "FishingMons"
+FISHING_MONS_INDEX    = 3
+HIDDEN_MONS           = "hidden_mons"
+HIDDEN_MONS_LABEL     = "HiddenMons"
+HIDDEN_MONS_INDEX     = 4
+MONS_INFO_TOTAL       = HIDDEN_MONS_INDEX + 1
+
+# fishing encounter data
+GOOD_ROD              = "good_rod"
+GOOD_ROD_FIRST_INDEX  = 2
+GOOD_ROD_LAST_INDEX   = 4
+OLD_ROD               = "old_rod"
+OLD_ROD_FIRST_INDEX   = 0
+OLD_ROD_LAST_INDEX    = 1
+SUPER_ROD             = "super_rod"
+SUPER_ROD_FIRST_INDEX = 5
+SUPER_ROD_LAST_INDEX  = 9
+
+# time of day encounter data
+TIME_DEFAULT       = "OW_TIME_OF_DAY_DEFAULT"
+TIME_DEFAULT_LABEL = ""
+TIME_DEFAULT_INDEX = 0
+TIME_MORNING       = "time_morning"
+TIME_MORNING_LABEL = "Morning"
+TIME_MORNING_INDEX = 0
+TIME_DAY           = "time_day"
+TIME_DAY_LABEL     = "Day"
+TIME_DAY_INDEX     = 1
+TIME_EVENING       = "time_evening"
+TIME_EVENING_LABEL = "Evening"
+TIME_EVENING_INDEX = 2
+TIME_NIGHT         = "time_night"
+TIME_NIGHT_LABEL   = "Night"
+TIME_NIGHT_INDEX   = 3
+TOTAL_TIME_STAGES  = TIME_NIGHT_INDEX + 1
+
+# struct building blocks
+baseStruct          = "const struct WildPokemon"
+structLabel         = ""
+structMonType       = ""
+structTime          = ""
+structMap           = ""
+
+structInfo          = "Info"
+structHeader        = "Header"
+structArrayAssign   = "[] ="
+
+baseStructLabel     = ""
+baseStructContent   = []
+infoStructString    = ""
+infoStructRate      = 0
+infoStructContent   = []
+headerStructLabel   = ""
+headerStructContent = {}
+headerStructTable   = {}
+headerIndex = 0
+
+# map header data variables
+hLabel       = ""
+hForMaps     = True
+headersArray = [headerIndex]
+
+# headersArrayItems
+landMonsInfo      = ""
+waterMonsInfo     = ""
+rockSmashMonsInfo = ""
+fishingMonsInfo   = ""
+
+# encounter rate variables
+eLandMons      = []
+eWaterMons     = []
+eRockSmashMons = []
+eFishingMons   = []
+
+
+# debug output control
+printEncounterHeaders           = True
+printEncounterRateMacros        = True
+printEncounterStructsInfoString = True
+printEncounterStructs           = True
+
+
+def ImportWildEncounterFile():
+    # make sure we're in the right directory before anything else
+    if not os.path.exists("Makefile"):
+        print("Please run this script from the project's root folder.")
+        quit()
+
+    global MON_HEADERS
+    global landMonsInfo
+    global waterMonsInfo
+    global rockSmashMonsInfo
+    global fishingMonsInfo
+    global hiddenMonsInfo
+    global structLabel
+    global structMonType
+    global structTime
+    global structMap
+    global baseStructLabel
+    global baseStructContent
+    global infoStructString
+    global infoStructRate
+    global headerStructLabel
+    global headerStructContent
+    global hLabel
+    global headersArray
+    global eLandMons
+    global eWaterMons
+    global eRockSmashMons
+    global eFishingMons
+    global encounterTotalCount
+    global encounterCount
+    global headerIndex
+    global tabStr
+    tabStr = "    "
+
+    global IS_ENABLED
+    IS_ENABLED = IsConfigEnabled()
+
+    wFile = open("src/data/wild_encounters.json")
+    wData = json.load(wFile)
+
+    encounterTotalCount = []
+    encounterCount = []
+    groupCount = 0
+    while groupCount < len(wData["wild_encounter_groups"]):
+        encounterTotalCount.append(0)
+        encounterCount.append(0)
+        groupCount += 1
+
+    for data in wData["wild_encounter_groups"]:
+        wEncounters = wData["wild_encounter_groups"][headerIndex]["encounters"]
+        headerSuffix = structHeader + "s"
+
+        if data["label"]:
+            hLabel = wData["wild_encounter_groups"][headerIndex]["label"]
+            if headerSuffix in hLabel:
+                hLabel = hLabel[:len(hLabel) - len(headerSuffix)]
+            MON_HEADERS.append(hLabel)
+
+        if data["for_maps"]:
+            hForMaps = wData["wild_encounter_groups"][headerIndex]["for_maps"]
+    
+        # for the encounter rate macros, so we don't worry about hidden mons here
+        if headerIndex == 0:
+            wFields = wData["wild_encounter_groups"][headerIndex]["fields"]
+            for field in wFields:
+                if field["type"] == LAND_MONS:
+                    eLandMons = field["encounter_rates"]
+                elif field["type"] == WATER_MONS:
+                    eWaterMons = field["encounter_rates"]
+                elif field["type"] == ROCK_SMASH_MONS:
+                    eRockSmashMons = field["encounter_rates"]
+                elif field["type"] == FISHING_MONS:
+                    eFishingMons = field["encounter_rates"]
+                    eFishingMons.append(field["groups"])
+
+            PrintGeneratedWarningText()
+
+            print('#include "rtc.h"')
+            print("\n")
+
+            PrintEncounterRateMacros()
+            print("\n")
+
+        for encounter in wEncounters:
+            if "map" in encounter:
+                structMap = encounter["map"]
+            else:
+                structMap = encounter["base_label"]
+            structLabel = encounter["base_label"]
+            
+            if encounterTotalCount[headerIndex] != len(wEncounters):
+                encounterTotalCount[headerIndex] = len(wEncounters)
+            encounterCount[headerIndex] += 1
+            headersArray = []
+
+            if not IS_ENABLED:
+                structTime = TIME_DEFAULT_LABEL
+            elif TIME_MORNING_LABEL in structLabel:
+                structTime = TIME_MORNING_LABEL
+            elif TIME_DAY_LABEL in structLabel:
+                structTime = TIME_DAY_LABEL
+            elif TIME_EVENING_LABEL in structLabel:
+                structTime = TIME_EVENING_LABEL
+            elif TIME_NIGHT_LABEL in structLabel:
+                structTime = TIME_NIGHT_LABEL
+            else:
+                structTime = TIME_MORNING_LABEL
+                structLabel = structLabel + "_Morning"
+
+            landMonsInfo      = ""
+            waterMonsInfo     = ""
+            rockSmashMonsInfo = ""
+            fishingMonsInfo   = ""
+            hiddenMonsInfo    = ""
+            for areaTable in encounter:
+                if LAND_MONS in areaTable:
+                    structMonType = LAND_MONS_LABEL
+                    landMonsInfo = f"{structLabel}_{structMonType}{structInfo}"
+                elif WATER_MONS in areaTable:
+                    structMonType = WATER_MONS_LABEL
+                    waterMonsInfo = f"{structLabel}_{structMonType}{structInfo}"
+                elif ROCK_SMASH_MONS in areaTable:
+                    structMonType = ROCK_SMASH_MONS_LABEL
+                    rockSmashMonsInfo = f"{structLabel}_{structMonType}{structInfo}"
+                elif FISHING_MONS in areaTable:
+                    structMonType = FISHING_MONS_LABEL
+                    fishingMonsInfo = f"{structLabel}_{structMonType}{structInfo}"
+                elif HIDDEN_MONS in areaTable:
+                    structMonType = HIDDEN_MONS_LABEL
+                    hiddenMonsInfo = f"{structLabel}_{structMonType}{structInfo}"
+                else:
+                    structMonType = ""
+                    continue
+                
+                baseStructContent = []
+                for group in encounter[areaTable]:
+                    if "mons" in group:
+                        for mon in encounter[areaTable][group]:
+                            baseStructContent.append(list(mon.values()))
+
+                    if "encounter_rate" in group:
+                        infoStructRate = encounter[areaTable][group]
+                
+                baseStructLabel = f"{baseStruct} {structLabel}_{structMonType}{structArrayAssign}"
+                if printEncounterStructs:
+                    print()
+                    print(baseStructLabel)
+                    print("{")
+                    PrintStructContent(baseStructContent)
+                    print("};")
+
+                if printEncounterStructsInfoString:
+                    infoStructString = f"{baseStruct}{structInfo} {structLabel}_{structMonType}{structInfo} = {{ {infoStructRate}, {structLabel}_{structMonType} }};"
+                    print(infoStructString)
+
+            AssembleMonHeaderContent()
+        headerIndex += 1
+    PrintWildMonHeadersContent()
+
+
+def PrintStructContent(contentList):
+    for monList in contentList:
+        print(f"{tabStr}{{ {monList[0]}, {monList[1]}, {monList[2]} }},")
+    return
+
+
+def GetStructLabelWithoutTime(label):
+    labelLength = len(label)
+    timeLength = 0
+
+    if not IS_ENABLED:
+        return label
+    elif TIME_MORNING_LABEL in label:
+        timeLength = len(TIME_MORNING_LABEL)
+    elif TIME_DAY_LABEL in label:
+        timeLength = len(TIME_DAY_LABEL)
+    elif TIME_EVENING_LABEL in label:
+        timeLength = len(TIME_EVENING_LABEL)
+    elif TIME_NIGHT_LABEL in label:
+        timeLength = len(TIME_NIGHT_LABEL)
+    return label[:(labelLength - (timeLength + 1))]
+
+
+def AssembleMonHeaderContent():
+    global structLabel
+
+    SetupMonInfoVars()
+
+    tempHeaderLabel = GetWildMonHeadersLabel()
+    tempHeaderTimeIndex = GetTimeIndexFromString(structTime)
+    structLabelNoTime = GetStructLabelWithoutTime(structLabel)
+    
+    if tempHeaderLabel not in headerStructTable:
+        headerStructTable[tempHeaderLabel] = {}
+        headerStructTable[tempHeaderLabel]["groupNum"] = headerIndex
+
+    if structLabelNoTime not in headerStructTable[tempHeaderLabel]:
+        headerStructTable[tempHeaderLabel][structLabelNoTime] = {}
+        headerStructTable[tempHeaderLabel][structLabelNoTime]["headerType"] = GetWildMonHeadersLabel()
+        headerStructTable[tempHeaderLabel][structLabelNoTime]["mapGroup"] = structMap
+        headerStructTable[tempHeaderLabel][structLabelNoTime]["mapNum"] = structMap
+        headerStructTable[tempHeaderLabel][structLabelNoTime]["encounterTotalCount"] = encounterTotalCount[headerIndex]
+        headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"] = []
+
+        timeStart = TIME_DEFAULT_INDEX
+        timeEnd = TIME_NIGHT_INDEX if IS_ENABLED else TIME_DEFAULT_INDEX
+        while timeStart <= timeEnd:
+            headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"].append([])
+            timeStart += 1
+
+    headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"][tempHeaderTimeIndex].append(landMonsInfo)
+    headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"][tempHeaderTimeIndex].append(waterMonsInfo)
+    headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"][tempHeaderTimeIndex].append(rockSmashMonsInfo)
+    headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"][tempHeaderTimeIndex].append(fishingMonsInfo)
+    headerStructTable[tempHeaderLabel][structLabelNoTime]["encounter_types"][tempHeaderTimeIndex].append(hiddenMonsInfo)
+
+
+def SetupMonInfoVars():
+    global landMonsInfo
+    global waterMonsInfo
+    global rockSmashMonsInfo
+    global fishingMonsInfo
+    global hiddenMonsInfo
+
+    if landMonsInfo == "":
+        landMonsInfo = NULL
+    else:
+        landMonsInfo = f"&{landMonsInfo}"
+
+    if waterMonsInfo == "":
+        waterMonsInfo = NULL
+    else:
+        waterMonsInfo = f"&{waterMonsInfo}"
+
+    if rockSmashMonsInfo == "":
+        rockSmashMonsInfo = NULL
+    else:
+        rockSmashMonsInfo = f"&{rockSmashMonsInfo}"
+
+    if fishingMonsInfo == "":
+        fishingMonsInfo = NULL
+    else:
+        fishingMonsInfo = f"&{fishingMonsInfo}"
+
+    if hiddenMonsInfo == "":
+        hiddenMonsInfo = NULL
+    else:
+        hiddenMonsInfo = f"&{hiddenMonsInfo}"
+    
+
+def PrintWildMonHeadersContent():
+    global tabStr
+
+    groupCount = 0
+    for group in headerStructTable:
+        labelCount = 0
+        for label in headerStructTable[group]:
+            if label != "groupNum":
+                if labelCount == 0:
+                    PrintEncounterHeaders("\n")
+                    PrintEncounterHeaders(headerStructTable[group][label]["headerType"])
+
+                PrintEncounterHeaders(tabStr + "{")
+
+                for stat in headerStructTable[group][label]:
+                    mapData = headerStructTable[group][label][stat]
+
+                    if stat == "mapGroup":
+                        PrintEncounterHeaders(f"{TabStr(2)}.mapGroup = {GetMapGroupEnum(mapData)},")
+                    elif stat == "mapNum":
+                        PrintEncounterHeaders(f"{TabStr(2)}.mapNum = {GetMapGroupEnum(mapData, labelCount + 1)},")
+
+                    if type(headerStructTable[group][label][stat]) == list:
+                        PrintEncounterHeaders(f"{TabStr(2)}.encounterTypes =")
+                        PrintEncounterHeaders(TabStr(2) + "{")
+
+                        infoCount = 0
+                        for monInfo in headerStructTable[group][label][stat]:
+                            PrintEncounterHeaders(f"{TabStr(3)}[{GetTimeStrFromIndex(infoCount)}] = ")
+
+                            infoIndex = 0
+                            while infoIndex <= MONS_INFO_TOTAL - 1:
+                                if infoIndex == 0:
+                                    PrintEncounterHeaders(TabStr(3) + "{")
+
+                                if len(monInfo) == 0:
+                                    PrintEncounterHeaders(f"{TabStr(4)}{GetIMonInfoStringFromIndex(infoIndex)} = NULL,")
+                                else:
+                                    PrintEncounterHeaders(f"{TabStr(4)}{GetIMonInfoStringFromIndex(infoIndex)} = {monInfo[infoIndex]},")
+
+                                if infoIndex == MONS_INFO_TOTAL - 1:
+                                    PrintEncounterHeaders(TabStr(3) + "},")
+
+                                infoIndex += 1
+                            infoCount += 1
+                        PrintEncounterHeaders(TabStr(2) + "},")
+                PrintEncounterHeaders(tabStr + "},")
+
+                if labelCount + 1 == headerStructTable[group][label]["encounterTotalCount"]:
+                    PrintEncounterHeaders(tabStr + "{")
+                    PrintEncounterHeaders(f"{TabStr(2)}.mapGroup = {GetMapGroupEnum(MAP_UNDEFINED)},")
+                    PrintEncounterHeaders(f"{TabStr(2)}.mapNum = {GetMapGroupEnum(MAP_UNDEFINED, labelCount + 1)},")
+
+                    timeEnd = TIME_NIGHT_INDEX if IS_ENABLED else TIME_DEFAULT_INDEX
+                    nullCount = 0
+                    while nullCount <= timeEnd:
+                        if nullCount == 0:
+                            PrintEncounterHeaders(f"{TabStr(2)}.encounterTypes =")
+                            PrintEncounterHeaders(TabStr(2)+ "{")
+
+                        PrintEncounterHeaders(f"{TabStr(3)}[{GetTimeStrFromIndex(nullCount)}] = ")
+
+                        nullIndex = 0
+                        while nullIndex <= MONS_INFO_TOTAL - 1:
+                            if nullIndex == 0:
+                                PrintEncounterHeaders(TabStr(3) + "{")
+
+                            PrintEncounterHeaders(f"{TabStr(4)}{GetIMonInfoStringFromIndex(nullIndex)} = NULL,")
+
+                            if nullIndex == MONS_INFO_TOTAL - 1:
+                                PrintEncounterHeaders(TabStr(3) + "},")
+
+                            nullIndex += 1
+                        nullCount += 1
+                    PrintEncounterHeaders(TabStr(2) + "},")
+                    PrintEncounterHeaders(tabStr + "},")
+                labelCount += 1
+        groupCount += 1
+        PrintEncounterHeaders("};")
+
+
+def GetWildMonHeadersLabel():
+        return f"{baseStruct}{structHeader} {MON_HEADERS[headerIndex]}{structHeader}s{structArrayAssign}" + "\n{"
+
+
+def PrintEncounterHeaders(content):
+    if printEncounterHeaders:
+        print(content)
+
+
+def PrintEncounterRateMacros():
+    if not printEncounterRateMacros:
+        return
+
+    rateCount = 0
+    for percent in eLandMons:
+        if rateCount == 0:
+            print(f"{define} {ENCOUNTER_CHANCE}_{LAND_MONS.upper()}_{SLOT}_{rateCount} {percent}")
+        else:
+            print(
+                f"{define} {ENCOUNTER_CHANCE}_{LAND_MONS.upper()}_{SLOT}_{rateCount} {ENCOUNTER_CHANCE}_{LAND_MONS.upper()}_{SLOT}_{rateCount - 1} + {percent}"
+            )
+
+        if rateCount + 1 == len(eLandMons):
+            print(
+                f"{define} {ENCOUNTER_CHANCE}_{LAND_MONS.upper()}_{TOTAL} ({ENCOUNTER_CHANCE}_{LAND_MONS.upper()}_{SLOT}_{rateCount})"
+            )
+        rateCount += 1
+
+    rateCount = 0
+    for percent in eWaterMons:
+        if rateCount == 0:
+            print(f"{define} {ENCOUNTER_CHANCE}_{WATER_MONS.upper()}_{SLOT}_{rateCount} {percent}")
+        else:
+            print(
+                f"{define} {ENCOUNTER_CHANCE}_{WATER_MONS.upper()}_{SLOT}_{rateCount} {ENCOUNTER_CHANCE}_{WATER_MONS.upper()}_{SLOT}_{rateCount - 1} + {percent}"
+            )
+
+        if rateCount + 1 == len(eWaterMons):
+            print(
+                f"{define} {ENCOUNTER_CHANCE}_{WATER_MONS.upper()}_{TOTAL} ({ENCOUNTER_CHANCE}_{WATER_MONS.upper()}_{SLOT}_{rateCount})"
+            )
+        rateCount += 1
+
+    rateCount = 0
+    for percent in eRockSmashMons:
+        if rateCount == 0:
+            print(f"{define} {ENCOUNTER_CHANCE}_{ROCK_SMASH_MONS.upper()}_{SLOT}_{rateCount} {percent}")
+        else:
+            print(
+                f"{define} {ENCOUNTER_CHANCE}_{ROCK_SMASH_MONS.upper()}_{SLOT}_{rateCount} {ENCOUNTER_CHANCE}_{ROCK_SMASH_MONS.upper()}_{SLOT}_{rateCount - 1} + {percent}"
+            )
+
+        if rateCount + 1 == len(eRockSmashMons):
+            print(
+                f"{define} {ENCOUNTER_CHANCE}_{ROCK_SMASH_MONS.upper()}_{TOTAL} ({ENCOUNTER_CHANCE}_{ROCK_SMASH_MONS.upper()}_{SLOT}_{rateCount})"
+            )
+        rateCount += 1
+
+    for rodRate in eFishingMons[-1]:
+        for rodPercentIndex in eFishingMons[-1][rodRate]:
+            if rodPercentIndex == OLD_ROD_FIRST_INDEX or rodPercentIndex == GOOD_ROD_FIRST_INDEX or rodPercentIndex == SUPER_ROD_FIRST_INDEX:
+                print(
+                    f"{define} {ENCOUNTER_CHANCE}_{FISHING_MONS.upper()}_{rodRate.upper()}_{SLOT}_{rodPercentIndex} {eFishingMons[rodPercentIndex]}"
+                )
+            else:
+                print(
+                    f"{define} {ENCOUNTER_CHANCE}_{FISHING_MONS.upper()}_{rodRate.upper()}_{SLOT}_{rodPercentIndex} {ENCOUNTER_CHANCE}_{FISHING_MONS.upper()}_{rodRate.upper()}_{SLOT}_{rodPercentIndex - 1} + {eFishingMons[rodPercentIndex]}"
+                )
+            
+            if rodPercentIndex == OLD_ROD_LAST_INDEX or rodPercentIndex == GOOD_ROD_LAST_INDEX or rodPercentIndex == SUPER_ROD_LAST_INDEX:
+                print(
+                    f"{define} {ENCOUNTER_CHANCE}_{FISHING_MONS.upper()}_{rodRate.upper()}_{TOTAL} ({ENCOUNTER_CHANCE}_{FISHING_MONS.upper()}_{rodRate.upper()}_{SLOT}_{rodPercentIndex})"
+                )
+
+
+def GetTimeStrFromIndex(index):
+    if not IS_ENABLED:
+        return TIME_DEFAULT
+    elif index == TIME_MORNING_INDEX:
+        return TIME_MORNING.upper()
+    elif index == TIME_DAY_INDEX:
+        return TIME_DAY.upper()
+    elif index == TIME_EVENING_INDEX:
+        return TIME_EVENING.upper()
+    elif index == TIME_NIGHT_INDEX:
+        return TIME_NIGHT.upper()
+    return index
+
+
+def GetTimeIndexFromString(string):
+    if not IS_ENABLED:
+        return TIME_DEFAULT_INDEX
+    elif string.lower() == TIME_MORNING or string == TIME_MORNING_LABEL:
+        return TIME_MORNING_INDEX
+    elif string.lower() == TIME_DAY or string == TIME_DAY_LABEL:
+        return TIME_DAY_INDEX
+    elif string.lower() == TIME_EVENING or string == TIME_EVENING_LABEL:
+        return TIME_EVENING_INDEX
+    elif string.lower() == TIME_NIGHT or string == TIME_NIGHT_LABEL:
+        return TIME_NIGHT_INDEX
+    return string
+
+
+def GetIMonInfoStringFromIndex(index):
+    if index == LAND_MONS_INDEX:
+        return ".landMonsInfo"
+    elif index == WATER_MONS_INDEX:
+        return ".waterMonsInfo"
+    elif index == ROCK_SMASH_MONS_INDEX:
+        return ".rockSmashMonsInfo"
+    elif index == FISHING_MONS_INDEX:
+        return ".fishingMonsInfo"
+    elif index == HIDDEN_MONS_INDEX:
+        return ".hiddenMonsInfo"
+    return index
+
+
+def GetMapGroupEnum(string, index = 0):
+    if "MAP_" in string and index == 0:
+        return "MAP_GROUP(" + string[4:len(string)] + ")"
+    elif "MAP_" in string and index != 0:
+        return "MAP_NUM(" + string[4:len(string)] + ")"
+    return index
+
+
+"""
+get copied lhea :^ ) 
+- next two functions copied almost verbatim from @lhearachel's python scripts in tools/learnset_helpers
+"""
+def PrintGeneratedWarningText():
+    print("//")
+    print("// DO NOT MODIFY THIS FILE! It is auto-generated by tools/wild_encounters/wild_encounters_to_header.py")
+    print("//")
+    print("\n")
+
+
+def IsConfigEnabled():
+    CONFIG_ENABLED_PAT = re.compile(r"#define OW_TIME_OF_DAY_ENCOUNTERS\s+(?P<cfg_val>[^ ]*)")
+
+    with open("./include/config/overworld.h", "r") as overworld_config_file:
+        config_overworld = overworld_config_file.read()
+        config_setting = CONFIG_ENABLED_PAT.search(config_overworld)
+        return config_setting is not None and config_setting.group("cfg_val") in ("TRUE", "1")
+
+
+def TabStr(amount):
+    global tabStr
+    return tabStr * amount
+
+
+ImportWildEncounterFile()
+
+
+"""
+!!!! EXAMPLE OUTPUT !!!!
+- when OW_TIME_OF DAY_ENCOUNTERS is FALSE in configoverworld.h
+
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_0 20
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_1 ENCOUNTER_CHANCE_LAND_MONS_SLOT_0 + 20
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_2 ENCOUNTER_CHANCE_LAND_MONS_SLOT_1 + 10
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_3 ENCOUNTER_CHANCE_LAND_MONS_SLOT_2 + 10
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_4 ENCOUNTER_CHANCE_LAND_MONS_SLOT_3 + 10
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_5 ENCOUNTER_CHANCE_LAND_MONS_SLOT_4 + 10
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_6 ENCOUNTER_CHANCE_LAND_MONS_SLOT_5 + 5
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_7 ENCOUNTER_CHANCE_LAND_MONS_SLOT_6 + 5
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_8 ENCOUNTER_CHANCE_LAND_MONS_SLOT_7 + 4
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_9 ENCOUNTER_CHANCE_LAND_MONS_SLOT_8 + 4
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_10 ENCOUNTER_CHANCE_LAND_MONS_SLOT_9 + 1
+#define ENCOUNTER_CHANCE_LAND_MONS_SLOT_11 ENCOUNTER_CHANCE_LAND_MONS_SLOT_10 + 1
+#define ENCOUNTER_CHANCE_LAND_MONS_TOTAL (ENCOUNTER_CHANCE_LAND_MONS_SLOT_11)
+#define ENCOUNTER_CHANCE_WATER_MONS_SLOT_0 60
+#define ENCOUNTER_CHANCE_WATER_MONS_SLOT_1 ENCOUNTER_CHANCE_WATER_MONS_SLOT_0 + 30
+#define ENCOUNTER_CHANCE_WATER_MONS_SLOT_2 ENCOUNTER_CHANCE_WATER_MONS_SLOT_1 + 5
+#define ENCOUNTER_CHANCE_WATER_MONS_SLOT_3 ENCOUNTER_CHANCE_WATER_MONS_SLOT_2 + 4
+#define ENCOUNTER_CHANCE_WATER_MONS_SLOT_4 ENCOUNTER_CHANCE_WATER_MONS_SLOT_3 + 1
+#define ENCOUNTER_CHANCE_WATER_MONS_TOTAL (ENCOUNTER_CHANCE_WATER_MONS_SLOT_4)
+#define ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_0 60
+#define ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_1 ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_0 + 30
+#define ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_2 ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_1 + 5
+#define ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_3 ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_2 + 4
+#define ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_4 ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_3 + 1
+#define ENCOUNTER_CHANCE_ROCK_SMASH_MONS_TOTAL (ENCOUNTER_CHANCE_ROCK_SMASH_MONS_SLOT_4)
+#define ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_SLOT_2 60
+#define ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_SLOT_3 ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_SLOT_2 + 20
+#define ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_SLOT_4 ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_SLOT_3 + 20
+#define ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_TOTAL (ENCOUNTER_CHANCE_FISHING_MONS_GOOD_ROD_SLOT_4)
+#define ENCOUNTER_CHANCE_FISHING_MONS_OLD_ROD_SLOT_0 70
+#define ENCOUNTER_CHANCE_FISHING_MONS_OLD_ROD_SLOT_1 ENCOUNTER_CHANCE_FISHING_MONS_OLD_ROD_SLOT_0 + 30
+#define ENCOUNTER_CHANCE_FISHING_MONS_OLD_ROD_TOTAL (ENCOUNTER_CHANCE_FISHING_MONS_OLD_ROD_SLOT_1)
+#define ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_5 40
+#define ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_6 ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_5 + 40
+#define ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_7 ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_6 + 15
+#define ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_8 ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_7 + 4
+#define ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_9 ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_8 + 1
+#define ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_TOTAL (ENCOUNTER_CHANCE_FISHING_MONS_SUPER_ROD_SLOT_9)
+
+const struct WildPokemon gRoute101_LandMons_Day[] =
+{
+    { 2, 2, SPECIES_WURMPLE },
+    { 2, 2, SPECIES_POOCHYENA },
+    { 2, 2, SPECIES_WURMPLE },
+    { 3, 3, SPECIES_WURMPLE },
+    { 3, 3, SPECIES_POOCHYENA },
+    { 3, 3, SPECIES_POOCHYENA },
+    { 3, 3, SPECIES_WURMPLE },
+    { 3, 3, SPECIES_POOCHYENA },
+    { 2, 2, SPECIES_ZIGZAGOON },
+    { 2, 2, SPECIES_ZIGZAGOON },
+    { 3, 3, SPECIES_ZIGZAGOON },
+    { 3, 3, SPECIES_ZIGZAGOON },
+};
+
+const struct WildPokemonInfo gRoute101_Day_LandMonsInfo= { 20, gRoute101_Day_LandMons };
+const struct WildPokemonHeader gWildMonHeaders[] =
+{
+    {
+        .mapGroup = MAP(ROUTE101),
+        .mapNum = MAP_NUM(ROUTE101),
+        .encounterTypes =
+            [OW_TIME_OF_DAY_DEFAULT] =
+            {
+                .landMonsInfo = &gRoute101_LandMonsInfo,
+                .waterMonsInfo = NULL,
+                .rockSmashMonsInfo = NULL,
+                .fishingMonsInfo = NULL,
+                .hiddenMonsInfo = NULL,
+            }
+    },
+}
+"""