Reformed Calendar

There are two different versions of the Republican calendar: Romme's original equinox calendar from the Revolution, and Delambre's reformed algebraic calendar, used on this page, which can sometimes be one day ahead of the equinox. Current Reformed date and decimal time in local time:

Current reformed Republican date and decimal time in Paris Mean Time (PMT):

This for the reformed Republican calendar. Dates in the original calendar may be one day different.

Each day has a different animal, vegetable, mineral or farm implement associated with it, called the rural calendar.

French Republican calendar date, with decimal time, as written in genealogy records during the Revolution. The decimal time is shown with the hour and décime, which is a tenth-hour decimal, about a quarter-hour duodecimal. The first version is styled text; the second is Unicode, suitable for sharing on Facebook or Twitter. Copy and paste the one which looks better in your browser:

The calendar committee, including Romme, Delambre, LaLande, and others prepared a draft decree to reform the new calendar during the second year of its use, shortly before the first leap day was due, based on a proposal by Delambre, similar the the Gregorian calendar. On 19 floréal, year III, (May 8, 1795) Romme presented it to the Committee of Public Instruction. However, before he could present it to the National Convention, he became victim to the Reign of Terror, and the reform never happened.

Lalande did keep trying for the rest of the Revolution, to no avail, and the leap years were 3, 7, and 11, instead of 4, 8, and 12. Ironically, the two calendars would have been synchronized during the years 17–52 (1808–1843). However, Napoleon abolished the Republican calendar in 1805, during year 14, after he was crowned Emperor, ending the Republic. Here is the draft decree:

      ARTICLE ONE. The fourth year of the era of the Republic will be the first sextile: it will receive a sixth additional day, and will finish the first franciade. 

      ART. 2. The sextile years will follow one another every four years, and will mark the end of each franciade. 

      ART. 3. Over four consecutive centuries, the first, second, third centenaries, which will be common, are exempt from the previous article: only the fourth will be sextile. 

      ART. 4. It will thus be every four centuries, until the fortieth, which will end in a common year.

Below is the first day of the years, 1 Vendémiaire,  for 400 years in the Reformed Republican calendar, according to the leap year rules originally proposed by Delambre. "S" indicates sextile (leap) year; extra day added to end of year. 

ER	CE	Date