This collaborative effort led to the creation of an extraordinary secular calendar: the Tempus Fugit, conceived by Dominique and crafted by Julien in his Vallée de Joux workshop. Two and a half years would go into developing the world's smallest secular perpetual calendar. Featuring a unique complication that never fails to astonish, this piece - nominated for the Grand Prix d'Horlogerie de Genève in 2022 - incorporates the Gregorian calendar for 9,999 years.