staying up late or all night, possibly on special duties, but esp. to drink, dance etc.
It’s been a hard day’s night And I’ve been working like a dog It’s been ahard day’s night I should be sleeping like a log ... Google
A hard day’s night. It's hard to work when everyone around you ishaving a good time. Google
After hard day’s night, Santa and elves backat PeaceCorner. Google
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