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A humorous way to declare an unknown time in the wee hours of the morning. Especially used by military personnel to describe an unwanted time to be awake or awaken. Usually pronounced "oh" dark thirty.
"What time is morning formation?"

"Have no clue, oh dark thirty I imagine!"

Sgt. Hanson always has us up at zero dark thirty for our morning runs!
by echoseven75 November 29, 2013
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Oct 27 Word of the Day
The time between Christ’s birth and the beginning of the coronavirus.
In late 2016 AD or 3 B.C.V., Donald Trump was elected as the 45th President of the United States of America.
by JDS12 March 27, 2020
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2
Going completely silent from social networking, un-necessary relationships and distractions until the ultimate goal is attained.
I´m wasting too much time here. I´ve got to focus and go Zero Dark Thirty.
by SomeoneWhoIsntYou October 23, 2013
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