Unus Annus started on November 13, 2019, with the launch of its YouTube channel and first video.

Start date details

  • The joint channel by Markiplier and Ethan (CrankGameplays) is widely described as being created on November 13, 2019, marking the official start of Unus Annus.
  • Several retrospectives and analyses of the project list its “birth” date as November 13, 2019, with the planned one‑year run ending in mid‑November 2020.

Why the date sometimes varies

  • Some archives and forum discussions reference nearby dates (like November 12 or 15) because they track things like channel creation, first upload, or public launch slightly differently.
  • Despite these minor discrepancies, November 13, 2019 is the most consistently cited start date for when Unus Annus actually began as a public, daily‑upload project.

Information gathered from public forums or data available on the internet and portrayed here.