Crossword Genius

The time Andy got pointlessly upset (3)

Ross

I believe the answer is:

day

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'the time' is the definition.
(day is a kind of time)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for day that I've seen before include "THIRD PART OF 23" , "Period of time" , "24 23 acrosses" , "24 hour period" , "Dawn to dusk" .)

I've seen this clue in the Evening Standard.
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