RecurrencePatternEvaluator: Adjust nonexistent recurrence instances a…

…ccording to RFC 5545 3.3.5
ical-org · Dec 28, 2024 · 1c99517 · 1c99517
1 parent d0ef8e7
commit 1c99517
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/Ical.Net/Evaluation/RecurrencePatternEvaluator.cs b/Ical.Net/Evaluation/RecurrencePatternEvaluator.cs
@@ -943,7 +943,11 @@ private static Period CreatePeriod(DateTime dateTime, IDateTime referenceDate)
     {
         // Turn each resulting date/time into an IDateTime and associate it
         // with the reference date.
-        IDateTime newDt = new CalDateTime(dateTime, referenceDate.TzId, referenceDate.HasTime);
+        IDateTime newDt = new CalDateTime(dateTime, null, referenceDate.HasTime);
+        if (referenceDate.TzId != null) {
+            // Adjust nonexistent recurrence instances according to RFC 5545 3.3.5
+            newDt = newDt.ToTimeZone(referenceDate.TzId);
+        }
 
         newDt.AssociateWith(referenceDate);