I'm looking for a word which means "leaving space around", as an antonym of overlap.
Specific example case:
The server's service stops between 23:00 and 00:00 UTC, therefore to avoid generating exceptions during predicted maintenance windows, any clients should stop communicating with the service between 22:45 and 00:15 UTC (i.e. additional 15 minutes either side of the window to ensure no overlap)
Best Answer
The word 'margin' has this exact meaning.
e.g. "...between 22:45 and 00:15 UTC (i.e. 15 minutes margin either side of the window)"