oh dark

(Usually military) Slang term used to describe a very early hour in the morning.

We may as well catch some sleep this afternoon, 'cause it's wheels up at oh dark thirty.

by Depleted Uranium October 21, 2008

oh-dark-thirty

Period from 12:00 AM to 5:59 AM.

Oh-dark-thirty.

by Çyñywynny October 24, 2025

oh-dark-hundred

Synonym for postmidnight.

Oh-dark-hundred.

by Çwçwçwçwçw July 31, 2025

oh-dark-thirty

Synonym for postmidnight.

Oh-dark-thirty.

by Ñwñwñwñwñwñw August 3, 2025

oh-dark-hundred

Period from 00:00 (zero o'clock) until 05:59 (fifty-nine past five).

Oh-dark-hundred.

by Çpovipoviski July 18, 2025

oh-dark-hundred

Period from 12:00 AM to 5:59 AM.

Oh-dark-hundred.

by Çyñywynny October 24, 2025

oh-dark-hundred

Period between 00:00 (12:00 am) until 05:59 (5:59 am).

Oh-dark-hundred.

by ÑÇWÑÇWÑÇWÑÇWÑÇWÑÇW August 7, 2025