I have set up a simple automation to create an event from a date and time field. These are PDT and my GCal is set to Los Angeles time zone. However, the event that gets created is one hour behind the start and end time listed in Airtable:
1st event should start at 9:30 am on 11/13
2nd event should start at 21:30 (9:30 pm) on 11/13

Here is what arrives:


Off by one hour!
