Unable to save new maintenance mode schedules after the time changed.
Error displayed: "Unable to save maintenance schedule with a start time in the past"
Release : 20.1
Component : UIM MAINTENANCE MODE
This issue is sometimes seen when the time zone is not set the same across the UIM Server, UMP server, and the UIM database server.
Set the same time zone across UIM Server, UMP server, and the UIM database server.
See UIM Time zone Requirements: