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Our SfCalendar is configured to show times in the client's time zone and one of our use cases is overnight work shifts. I'm using the America/Chicago (Central Standard/Daylight Time) time zones in the following example:
If I create an appointment on Sunday, November 7, 2021 between 12 AM – 12 PM, the appointment spans 12 AM – 1 PM in day view, when it should span 12 AM – 11 AM per the daylight savings time transition occurring at 2 AM, where 1 hour is subtracted from the current time.
Additionally, If I create an appointment beginning on Sunday, March 13, 2022 between 12 AM – 12 PM, the appointment spans 12 AM – 11 AM when displayed in day view and spans 12 AM – 12 PM when displayed in timeline day view. Both are incorrect. The event should be shown as occurring between 12 AM – 1 PM per the DST transition occurring at 2 AM, where 1 hour is added to the current time.
For further reference, you may review https://www.timeanddate.com/time/dst/ or recreate the events I described above in Google Calendar to observe the correct behavior.
I have also been able to replicate this with your 'flutter-examples' project and have attached screenshots.