Is a latin phrase that means one year. It is also a popular YouTube channel which, even though it's content might seem strange, is quite entertaining. the channel was created by the YouTubers Markiplier aka Mark and Crankgameplay aka Eathen.
by Cluelessartist November 21, 2019

National Unus Annus Day is on November 14th, where fans of the deleted channel "Unus Annus" celebrate by wearing the merchandise from it or wearing either all black or all white. Unnus Annus was a channel made by Markiplier and Crankgameplays and then deleted on November 14th. the channel only went on for a year to give a message about how you can never stop the clock and to remember that everything comes to an end.
by boriacow November 16, 2020

by neela’s girlfriend October 10, 2022

A channel made by Markiplier and Crankgameplays on November 13th 2020. They released 1 video every day for 365 days and on November 14th 2020, after a 12 hour livestream, the channel was deleted.
Memento mori, unus annus.
Memento mori, unus annus.
by Joltie February 26, 2021

Something that doesn't exist and never existed and that you cannot prove existed in the first place.
by Semicolon618 April 11, 2021

by 🙁‼️ July 25, 2021
