diff --git a/ComplexProperties/TimeZones/TimeZoneDefinition.cs b/ComplexProperties/TimeZones/TimeZoneDefinition.cs index cd1491e2..a1acf7f2 100644 --- a/ComplexProperties/TimeZones/TimeZoneDefinition.cs +++ b/ComplexProperties/TimeZones/TimeZoneDefinition.cs @@ -179,6 +179,8 @@ internal TimeZoneDefinition(TimeZoneInfo timeZoneInfo) transitionToDummyGroup.DateTime = lastAdjustmentRuleEndDate.AddDays(1); this.transitions.Add(transitionToDummyGroup); + if(!this.periods.ContainsKey(standardPeriod.Id)) + this.periods.Add(standardPeriod.Id, standardPeriod); } } }