WHAT IS THIS ?: Tranquility Calendar is a calendar proposed by Jeff Siggins in 1989. Here, a year comprises of 13 months each of 28 days. The central point of this calendar is 'Moon Landing Day' (20 July 1969). For more information, see its wikipedia page.

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GO TO: Today, Moon Landing Day, or Gregorian Calendar.

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CREDITS: Created by Anoop Elias, basic design inspired from Gabriele Cirulli's game 2048. Thanks to Roshan Raju for his comments and ideas. Fork this on GitHub.