From fe4c859c832e5099f9af8864f369f527b1fbfd82 Mon Sep 17 00:00:00 2001
From: Jason Dove <1695733+jasongdove@users.noreply.github.com>
Date: Sun, 2 Nov 2025 09:35:30 -0600
Subject: [PATCH] fix classic schedule start time calculation across a UTC
 offset change

---
 CHANGELOG.md                                  |  1 +
 .../Scheduling/PlayoutModeSchedulerBase.cs    | 20 +++++++++----------
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0faf0746c..0baedb5c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Properly set explicit audio decoder on combined audio and video input file
 - Fix building sequential schedules across a UTC offset change
 - Fix block start time calculation across a UTC offset change
+- Fix classic schedule start time calculation across a UTC offset change
 - Fix XMLTV generation for channels using on-demand playout mode
 - Fix some removed songs from appearing in the trash
 
diff --git a/ErsatzTV.Core/Scheduling/PlayoutModeSchedulerBase.cs b/ErsatzTV.Core/Scheduling/PlayoutModeSchedulerBase.cs
index 019d171ca..61a06de2f 100644
--- a/ErsatzTV.Core/Scheduling/PlayoutModeSchedulerBase.cs
+++ b/ErsatzTV.Core/Scheduling/PlayoutModeSchedulerBase.cs
@@ -60,16 +60,16 @@ public abstract class PlayoutModeSchedulerBase<T>(ILogger logger) : IPlayoutMode
             TimeSpan itemStartTime = scheduleItem.StartTime.GetValueOrDefault();
 
             DateTime date = startTime.Date;
-            DateTimeOffset result = new DateTimeOffset(
-                    date.Year,
-                    date.Month,
-                    date.Day,
-                    0,
-                    0,
-                    0,
-                    TimeZoneInfo.Local.GetUtcOffset(
-                        new DateTime(date.Year, date.Month, date.Day, 0, 0, 0, DateTimeKind.Local)))
-                .Add(itemStartTime);
+            var withStartTime = new DateTime(
+                date.Year,
+                date.Month,
+                date.Day,
+                0,
+                0,
+                0,
+                DateTimeKind.Unspecified).Add(itemStartTime);
+
+            DateTimeOffset result = new DateTimeOffset(withStartTime, TimeZoneInfo.Local.GetUtcOffset(withStartTime));
 
             // Serilog.Log.Logger.Debug(
             //     "StartTimeOfDay: {StartTimeOfDay} Item Start Time: {ItemStartTime}",