From e6a60ec21066df280b2e6606ad168f81a18ceb8c Mon Sep 17 00:00:00 2001
From: Kurt <kaphotics@gmail.com>
Date: Mon, 16 Nov 2020 15:41:39 -0800
Subject: [PATCH] Add single day tolerance to end of appearance period

---
 .../Encounters/EncounterSlot/GO/EncounterSlotGO.cs        | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/PKHeX.Core/Legality/Encounters/EncounterSlot/GO/EncounterSlotGO.cs b/PKHeX.Core/Legality/Encounters/EncounterSlot/GO/EncounterSlotGO.cs
index fa3589719..181b78679 100644
--- a/PKHeX.Core/Legality/Encounters/EncounterSlot/GO/EncounterSlotGO.cs
+++ b/PKHeX.Core/Legality/Encounters/EncounterSlot/GO/EncounterSlotGO.cs
@@ -44,11 +44,15 @@ namespace PKHeX.Core
 
         public bool IsWithinStartEnd(int stamp)
         {
+            // Events are in UTC, but time zones exist (and delayed captures too).
+            // Allow an extra day past the end date.
+            const int tolerance = 1;
+
             if (End == 0)
                 return Start <= stamp;
             if (Start == 0)
-                return stamp <= End;
-            return Start <= stamp && stamp <= End;
+                return stamp <= End + tolerance;
+            return Start <= stamp && stamp <= End + tolerance;
         }
 
         public static int GetTimeStamp(int y, int m, int d) => (y << 16) | (m << 8) | d;