The time of day, between 2am - 5am, that niggas (females + males included, or whatever the fuck you is) reflect on their mistakes and / or feelings, sometimes about someone or something hurtful. Your thoughts or feelings can usually keep you up, or sometimes you can just drift into being unhappy and remain that way until you get up.
the time of day between 2:30 and 2:40 when it's sad nigga hours and you get too deep in your feelings you get too fruity. if you stay fruity after 2:40 u officially gay.
Sad Nigga Hours is an event that is held 24/7 if you are a truly depressed nigga. You get to reflect on your feelings and mistakes and just feel DEPRESSED.