The instructions are very clear.
Don't feed the gremlins after MIDNIGHT.
The Big Bang Theory Season 3, Episode 4
It's MIDNIGHT.
The Big Bang Theory Season 10, Episode 11
Midnight.
The Big Bang Theory Season 9, Episode 15
but I don't know if I can wait
until MIDNIGHT.
The Big Bang Theory Season 11, Episode 11
Midnight blue or silver?
Game of Thrones Season 6, Episode 6