diff --git a/include/z64save.h b/include/z64save.h
index 71cb6428b1..ca0625ad27 100644
--- a/include/z64save.h
+++ b/include/z64save.h
@@ -603,8 +603,15 @@ typedef enum {
 #define WEEKEVENTREG_08_10 PACK_WEEKEVENTREG_FLAG(8, 0x10)
 #define WEEKEVENTREG_RECEIVED_DOGGY_RACETRACK_HEART_PIECE PACK_WEEKEVENTREG_FLAG(8, 0x20)
 
-// Related to final hours
-#define WEEKEVENTREG_08_40 PACK_WEEKEVENTREG_FLAG(8, 0x40)
+// This is set under three circumstances:
+// 1. The player watches the cutscene of the Clock Tower opening.
+// 2. The player sees the Clock Tower opening outside of a cutscene. After the first cycle, this
+//    can be seen in Termina Field or in North, East, or West Clock Town.
+// 3. The player enters Termina Field or North, South, East, or West Clock Town any time after
+//    midnight on the Final Day.
+// Thus, it is possible for the player to be in the final six hours and still have this unset; all
+// the player needs to do is avoid certain areas.
+#define WEEKEVENTREG_CLOCK_TOWER_OPENED PACK_WEEKEVENTREG_FLAG(8, 0x40)
 
 #define WEEKEVENTREG_08_80 PACK_WEEKEVENTREG_FLAG(8, 0x80)
 #define WEEKEVENTREG_09_01 PACK_WEEKEVENTREG_FLAG(9, 0x01)
diff --git a/src/code/z_elf_message.c b/src/code/z_elf_message.c
index 1b005443db..e2b54a9bf4 100644
--- a/src/code/z_elf_message.c
+++ b/src/code/z_elf_message.c
@@ -26,7 +26,7 @@ u16 QuestHint_GetTatlTextId(PlayState* play) {
     }
 
     if (CHECK_WEEKEVENTREG(WEEKEVENTREG_79_10)) {
-        if (CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40)) {
+        if (CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED)) {
             return 0;
         }
 
diff --git a/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c b/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c
index b9bf702b2b..afb9796a9c 100644
--- a/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c
+++ b/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c
@@ -1173,7 +1173,7 @@ void DmStk_StartTelescopeCutscene(DmStk* this, PlayState* play) {
 
     if (gSaveContext.save.day < 3) {
         csId = dayOneAndTwoCsId;
-    } else if (CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40) ||
+    } else if (CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED) ||
                ((CURRENT_DAY == 3) && (gSaveContext.save.time < CLOCK_TIME(6, 0)))) {
         csId = finalHoursCsId;
     } else {
diff --git a/src/overlays/actors/ovl_Elf_Msg6/z_elf_msg6.c b/src/overlays/actors/ovl_Elf_Msg6/z_elf_msg6.c
index 89fbd9f6b3..7304be4428 100644
--- a/src/overlays/actors/ovl_Elf_Msg6/z_elf_msg6.c
+++ b/src/overlays/actors/ovl_Elf_Msg6/z_elf_msg6.c
@@ -183,7 +183,7 @@ void ElfMsg6_Init(Actor* thisx, PlayState* play) {
                 return;
             }
 
-            if (CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40)) {
+            if (CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED)) {
                 if (CHECK_WEEKEVENTREG(WEEKEVENTREG_88_20)) {
                     Actor_Kill(&this->actor);
                     return;
@@ -276,7 +276,7 @@ void func_80BA1CF8(ElfMsg6* this, PlayState* play) {
         return;
     }
 
-    if ((this->actor.textId == 0x224) && CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40)) {
+    if ((this->actor.textId == 0x224) && CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED)) {
         this->actor.textId = 0x25B;
     } else if (func_80BA1C00(this) && (player->actor.speed > 1.0f)) {
         player->tatlTextId = -this->actor.textId;
diff --git a/src/overlays/actors/ovl_En_Time_Tag/z_en_time_tag.c b/src/overlays/actors/ovl_En_Time_Tag/z_en_time_tag.c
index dfcd1bad0f..9b569f8032 100644
--- a/src/overlays/actors/ovl_En_Time_Tag/z_en_time_tag.c
+++ b/src/overlays/actors/ovl_En_Time_Tag/z_en_time_tag.c
@@ -56,7 +56,7 @@ void EnTimeTag_Init(Actor* thisx, PlayState* play) {
 
     switch (TIMETAG_GET_TYPE(&this->actor)) {
         case TIMETAG_KICKOUT_FINAL_HOURS:
-            if (CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40) || (CURRENT_DAY != 3)) {
+            if (CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED) || (CURRENT_DAY != 3)) {
                 Actor_Kill(&this->actor);
                 return;
             }
diff --git a/src/overlays/actors/ovl_Obj_Tokeidai/z_obj_tokeidai.c b/src/overlays/actors/ovl_Obj_Tokeidai/z_obj_tokeidai.c
index 170eb35ceb..73cefa0f20 100644
--- a/src/overlays/actors/ovl_Obj_Tokeidai/z_obj_tokeidai.c
+++ b/src/overlays/actors/ovl_Obj_Tokeidai/z_obj_tokeidai.c
@@ -128,7 +128,7 @@ void ObjTokeidai_ExteriorGear_Init(ObjTokeidai* this, PlayState* play) {
         this->actionFunc = ObjTokeidai_ExteriorGear_OpenedIdle;
         this->actor.world.pos.y += this->actor.scale.y * 1900.0f;
         this->actor.shape.yOffset = 1500.0f;
-        SET_WEEKEVENTREG(WEEKEVENTREG_08_40);
+        SET_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED);
     } else {
         this->actionFunc = ObjTokeidai_ExteriorGear_Idle;
     }
@@ -444,7 +444,7 @@ void ObjTokeidai_TerminaFieldWalls_Idle(ObjTokeidai* this, PlayState* play) {
 void ObjTokeidai_TowerOpening_EndCutscene(ObjTokeidai* this, PlayState* play) {
     if (Cutscene_IsCueInChannel(play, CS_CMD_ACTOR_CUE_132) &&
         (play->csCtx.actorCues[Cutscene_GetCueChannel(play, CS_CMD_ACTOR_CUE_132)]->id == 5)) {
-        SET_WEEKEVENTREG(WEEKEVENTREG_08_40);
+        SET_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED);
         if (((play->sceneId == SCENE_CLOCKTOWER) && (gSaveContext.sceneLayer == 2) && (play->csCtx.scriptIndex == 0)) ||
             ((play->sceneId == SCENE_00KEIKOKU) && (gSaveContext.sceneLayer == 2) && (play->csCtx.scriptIndex == 0))) {
             Audio_SetCutsceneFlag(false);
@@ -593,7 +593,7 @@ void ObjTokeidai_TowerOpening_RaiseTower(ObjTokeidai* this, PlayState* play) {
 void ObjTokeidai_TowerOpening_Start(ObjTokeidai* this, PlayState* play) {
     if ((Cutscene_IsCueInChannel(play, CS_CMD_ACTOR_CUE_132) &&
          (play->csCtx.actorCues[Cutscene_GetCueChannel(play, CS_CMD_ACTOR_CUE_132)]->id == 4)) ||
-        CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40)) {
+        CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED)) {
         this->actionFunc = ObjTokeidai_TowerOpening_RaiseTower;
     }
 }
@@ -616,7 +616,7 @@ void ObjTokeidai_DoNothing(ObjTokeidai* this, PlayState* play) {
 
 void ObjTokeidai_StaircaseToRooftop_Idle(ObjTokeidai* this, PlayState* play) {
     if ((((CURRENT_DAY == 3) && (gSaveContext.save.time < CLOCK_TIME(6, 0))) || (CURRENT_DAY >= 4)) ||
-        CHECK_WEEKEVENTREG(WEEKEVENTREG_08_40)) {
+        CHECK_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED)) {
         this->actor.draw = ObjTokeidai_Draw;
     } else {
         this->actor.draw = NULL;
@@ -691,7 +691,7 @@ void ObjTokeidai_TowerClock_Idle(ObjTokeidai* this, PlayState* play) {
     if ((CURRENT_DAY == 3) && (this->clockHour < 6) && (gSaveContext.save.time < CLOCK_TIME(6, 0))) {
         this->actor.draw = ObjTokeidai_Clock_Draw;
         ObjTokeidai_SetupTowerOpening(this);
-        SET_WEEKEVENTREG(WEEKEVENTREG_08_40);
+        SET_WEEKEVENTREG(WEEKEVENTREG_CLOCK_TOWER_OPENED);
         return;
     }
 
diff --git a/tools/weekeventregconvert.py b/tools/weekeventregconvert.py
index ceaa72f50a..45faf5f0eb 100755
--- a/tools/weekeventregconvert.py
+++ b/tools/weekeventregconvert.py
@@ -74,7 +74,7 @@ weekEventReg = {
     ( 8 << 8) | 0x08: "WEEKEVENTREG_08_08",
     ( 8 << 8) | 0x10: "WEEKEVENTREG_08_10",
     ( 8 << 8) | 0x20: "WEEKEVENTREG_RECEIVED_DOGGY_RACETRACK_HEART_PIECE",
-    ( 8 << 8) | 0x40: "WEEKEVENTREG_08_40",
+    ( 8 << 8) | 0x40: "WEEKEVENTREG_CLOCK_TOWER_OPENED",
     ( 8 << 8) | 0x80: "WEEKEVENTREG_08_80",
     ( 9 << 8) | 0x01: "WEEKEVENTREG_09_01",
     ( 9 << 8) | 0x02: "WEEKEVENTREG_09_02",