The holiday days seem to be going into the next day as if that next day is also holiday.
This does not happen for candle lighting or havdalah.
1 Example ,The duration on outlook seems to be preset to 2 days. the event times goes from 10/9/2019 12:00am and ends 10/10/2109 12:00am . I would need to open the specific event "uncheck all day event" to correct this.
Customer support service by UserEcho