day off; off duty
Refers to a day off or off-duty period, especially in shift work or service jobs where one is normally on duty. Often used in contexts like police, firefighting, or hospitality.
Today is my day off, so I can rest well.
明け番の日は、いつも家族と過ごすことにしている。
On my off-duty days, I always make it a point to spend time with my family.
Compound of 明け (ake, 'end of a shift' or 'dawn') and 番 (ban, 'duty' or 'shift'), literally meaning the end of one's shift or the day after duty.