The 13-month calendar design by Dave Gorman was semi-humoristically introduced in or before 2016 as part of the British TV show Modern Life is Goodish. It has four weeks per month and a one-day intermission at the end of the year which is not part of any month or week, and also contains the leap day every four years. The months of July and August are renamed back to Quintilis and Sextilis, the start of the year is moved accordingly to 1 March, but by name only, so it is equal to the respective 1st day of the Gregorian year, not the 60th or 61st day. The new, 13th month is called Gormanuary.

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