appointed hour
Definitions
A specific time that has been prearranged or designated for an event or meeting.
The exact moment scheduled for a particular occurrence.
Examples
We gathered at the appointed hour to begin the ceremony.
The detective arrived at the appointed hour, hoping to catch the suspect in the act.
Synonyms
scheduled time designated moment fixed time set time agreed hour
Antonyms
unscheduled time random moment indefinite time unplanned hour