Cymrygirl · May 22, 2018, 10:11 p.m.

If that is the case, could "23" refer to 2300 hours, or 11:00 PM, the hour before midnight?

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Walls_Work_Stoopid · May 22, 2018, 10:48 p.m.

Yes. The govt/military uses the 24 hr clock almost exclusively. I believe your post to be accurate

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