diff --git a/CHANGELOG.md b/CHANGELOG.md
index 73a6fc1f1..7bfc75952 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed event text readability on colored backgrounds ([#1065])
 - Fixed invisible current time indicator in weekly view ([#99])
 - Fixed stuck zoom level in weekly view on some devices ([#621])
+- Fixed recurring events drifting by an hour after DST transitions ([#165])
 
 ## [1.10.3] - 2026-02-14
 ### Changed
@@ -217,6 +218,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#135]: https://github.com/FossifyOrg/Calendar/issues/135
 [#138]: https://github.com/FossifyOrg/Calendar/issues/138
 [#148]: https://github.com/FossifyOrg/Calendar/issues/148
+[#165]: https://github.com/FossifyOrg/Calendar/issues/165
 [#196]: https://github.com/FossifyOrg/Calendar/issues/196
 [#217]: https://github.com/FossifyOrg/Calendar/issues/217
 [#262]: https://github.com/FossifyOrg/Calendar/issues/262
diff --git a/app/src/main/kotlin/org/fossify/calendar/models/Event.kt b/app/src/main/kotlin/org/fossify/calendar/models/Event.kt
index 74312ff04..8654c9b57 100644
--- a/app/src/main/kotlin/org/fossify/calendar/models/Event.kt
+++ b/app/src/main/kotlin/org/fossify/calendar/models/Event.kt
@@ -2,6 +2,7 @@ package org.fossify.calendar.models
 
 import android.provider.CalendarContract
 import android.provider.CalendarContract.Attendees
+import android.util.Log
 import androidx.collection.LongSparseArray
 import androidx.room.ColumnInfo
 import androidx.room.Entity
@@ -74,7 +75,7 @@ data class Event(
     }
 
     fun addIntervalTime(original: Event) {
-        val oldStart = Formatter.getDateTimeFromTS(startTS)
+        val oldStart = Formatter.getDateTimeFromTS(startTS, resolveTimeZone())
         val newStart = when (repeatInterval) {
             DAY -> oldStart.plusDays(1)
             else -> {
@@ -109,6 +110,20 @@ data class Event(
         endTS = newEndTS
     }
 
+    // Returns the event's time zone, or the device default if unset or unrecognized.
+    private fun resolveTimeZone(): DateTimeZone {
+        return if (timeZone.isNotEmpty()) {
+            try {
+                DateTimeZone.forID(timeZone)
+            } catch (e: IllegalArgumentException) {
+                Log.w("Event", "Unrecognized timezone '$timeZone', using default", e)
+                DateTimeZone.getDefault()
+            }
+        } else {
+            DateTimeZone.getDefault()
+        }
+    }
+
     // if an event should happen on 29th Feb. with Same Day yearly repetition, show it only on leap years
     private fun addYearsWithSameDay(currStart: DateTime): DateTime {
         var newDateTime = currStart.plusYears(repeatInterval / YEAR)