Dark-thirty Edit Meaning

1.

the thirty minutes before nightfall, or the thirty minutes after night falls.basically the 1 hour time frame as it becomes dark.

i told david the party starts at dark-thirty.

See nightfall, dark, sunset, darkthirty, da trick biatch

2.

It is actually o' dark-thirty. It is a military term refering to beinging somewhere before the sun rises

We have to go, we have PT (physical training)at 0' dark-thirty.

See early, crack of dawn