I set a calendar event on 12/11/19 7pm-8:30pm with a reminder to go out 24 hours in advance. The email generated stated that the event was from 8-9:30pm (UTC -05:00 Eastern).
I figured this was a time zone issue and I sent a “send now” notification and the time was corrected on the email to 7-8:30pm but displayed (UTC -06:00 Central).
I presume that this is stemming from prior problems with time zones that I’ve read about. The time zone on the computer that the events was set is -05:00 UTC Eastern.