  the french republican calendar () or french revolutionary calendar (calendrier rÃ©volutionnaire franÃ§ais) was a calendar created and implemented during the french revolution, and used by the french government for about 12 years from late 1793 to 1805, and for 18 days by the paris commune in 1871. the revolutionary system was designed in part to remove all religious and royalist influences from the calendar, and was part of a larger attempt at decimalisation in france (which also included decimal time of day, decimalisation of currency, and metrication). ==overview and origins== ===precursor=== sylvain marÃ©chal, prominent anticlerical atheist, published the first edition of his almanach des honnÃªtes-gens in 1788. on pages 14&ndash;15 appears a calendar, consisting of twelve months. the first month is "mars, ou princeps" (march, or first), the last month is "fÃ©vrier, ou duodÃ©cembre" (february, or twelfth). (months september through december are already numeric names.) the lengths of the months are the same, however, the 10th, 20th, and 30th are singled out of each month as the end of a dÃ©cade. individual days were assigned, instead of to the traditional saints, to people noteworthy for mostly secular achievements; december 25th is assigned both jesus and newton. later editions of the almanac would switch to the republican calendar. ===history=== thumb|right|a copy of the french republican calendar in the historical museum of lausanne. the days of the french revolution and republic saw many efforts to sweep away various trappings of the ancien rÃ©gime; some of these were more successful than others. the new republican government sought to institute, among other reforms, a new social and legal system, a new system of weights and measures (which became the metric system), and a new calendar. amid nostalgia for the ancient roman republic, the theories of the enlightenment were at their peak, and the devisers of the new systems looked to nature for their inspiration. natural constants, multiples of ten, and latin derivations formed the fundamental blocks from which the new systems were built. the new calendar was created by a commission under the direction of the politician charles-gilbert romme seconded by claude joseph ferry and charles-franÃ§ois dupuis. they associated with their work the chemist louis-bernard guyton de morveau, the mathematicia
1792_in_France French_Republican_Calendar Obsolete_calendars Republicanism_in_France