Which of these is the most common way to write what the clock is?
It's 5 a.m.
It's 5 am.
It's 5 A.M.
It's 5 AM.
All those styles might be used. My preference, and the one that I would guess to be most common, is the first one. Opinions may vary.
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All those styles might be used. My preference, and the one that I would guess to be most common, is the first one. Opinions may vary.