OH DARK THIRTY

Very late at night, or very early in the morning, a time most people consider an ungodly hour (e.g., 3:00 am, 4:00 am). oh-dark-thirty, o-dark-thirty (Amy Anson and David Miller damillesiue.edu I was up 'til o-dark-thirty getting my homework done. OR I got up at o-dark-thirty this morning.), O-dark-30 (kriss wagner kriss_wagnerlycos.com O-dark-30 is the time of day morning-drive broadcasters have to be at work.), zero dark thirty, zero-dark-thirty (Jason jayboy50excite.com I had to get up at zero-dark-thirty this morning just to make it through traffic.) See Amish ass-crack of dawn, buttcrack of dawn, and chicken o'clock in the morning and for other early morning references. Example: In description.