Gregorian to French Republican
French Republican to Gregorian
Created in 1793 during the fervor of the French Revolution, the French Republican Calendar was a radical attempt to reinvent not only government and society, but time itself. Its designers aimed to break with the religious and monarchical traditions of the Ancien Régime and replace them with a system rooted in Enlightenment ideals, rational structure, and the rhythms of agricultural life.
Here’s more, in-depth information on the republican calendar, its months, names of days in a décade, the sansculottides, and the individual day names.