I enter the time and date of a maintenance notification in UTC. Our event happens 4/28/22 at 20:00 Pacific time. This is actually 03:00 on 4/29 UTC time.
The notification message goes out with the subject "Denali Advanced Integration Service Desk Maintenance - Denali Service Desk Scheduled Maintenance Notification - Telephony Service - 29 April 2022".
This is confusing to a recipient because they think the maintenance event happens 4/29.