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The French Republican Calendar or '''French Revolutionary Calendar''' is a Calendar proposed during the French Revolution , and used by the French government for about twelve years from late 1793 .

It was designed by the politician and Agronomist Charles Gilbert Romme , although it is usually attributed to Fabre D'Églantine , who invented the names of the months. The calendar was adopted by the Jacobin -controlled National Convention on 24 October 1793 .

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Years appear in writing as Roman Numerals (usually), counted from the beginning of the 'Republican Era', 22 September 1792 (the day the French First Republic was proclaimed, one day after the Convention abolished the monarchy). As a result, Roman Numeral I indicates the first year of the republic, that is, the year before the calendar actually came into use. The first day of each year included the Autumnal Equinox . There were twelve Month s, each divided into three ten-day weeks called ''décades''. The five or six extra days needed to approximate the Tropical Year were placed after the months at the end of each year. Each Day was divided into ten Hour s, each hour into 100 decimal Minute s and each decimal minute had 100 decimal Second s. Clock s were manufactured to display Decimal Time , but it did not catch on and was officially abandoned in 1795 , although some cities continued to use decimal time as late as 1801 .

A period of four years ending on a leap day was to be called a "Franciade".

Sunday or the Sabbath was reintroduced by the Concordat Of 1801 , effective Easter Sunday, 18 April 1802 .

Napoléon finally abolished the calendar effective 1 January 1806 (the day after 10 nivôse an XIV), a little over twelve years after its introduction. However, it was used again during the brief Paris Commune in 1871 (year LXXIX).

Many conversion tables and programs exist, largely created by genealogists. Some enthusiasts in France still use the calendar, more out of historical re-enactment than practicality.

Some legal texts that were adopted when the Republican Calendar was official are still in force in France and have kept their original dates for citation purposes.


CRITICISM AND SHORTCOMINGS OF THE CALENDAR


Leap years in the calendar are a point of great dispute, due to the contradicting statements requiring the year to start at the ''autumnal equinox'' while adding a ''leap day every 4 years'' (like the Gregorian Calendar ). The years III, VII, and XI were observed as leap years, and the years XV and XX were also planned as such.

A fixed arithmetic rule for determining leap years was proposed in the name of the Committee of Public Education by Gilbert Romme on 19 Floréal An III ( 8 May 1795 ). The proposed rule was to determine leap years by applying the rules of the Gregorian calendar to the years of the French Republic (years IV, VIII, XII, etc. were to be leap years) except that year 4000 (the last year of ten 400-year periods) should be a common year instead of a leap year. Because this proposal was never adopted, the original astronomical rule continued, which excluded any other fixed arithmetic rule. The proposal was intended to avoid uncertain future leap years caused by the inaccurate astronomical knowledge of the 1790s (even today, this statement is still valid due to the uncertainty in ΔT ). In particular, the committee noted that the true equinox of year 144 was predicted to occur at "11:59:40 p.m.", which was closer to midnight than its inherent 3 to 4 minute uncertainty.

The calendar was abolished because having a ten-day work week gave workers less rest (one day off every ten instead of one day off every seven); because the equinox was a mobile date to start every new year (a fantastic source of confusion for almost everybody); and because it was incompatible with the secular rhythms of Trade fairs and agricultural markets.

Perhaps the most famous date in this calendar was immortalised by Karl Marx in the title of his pamphlet, '' The 18th Brumaire Of Louis Napoléon '' ( 1852 ). The 18 Brumaire ( 9 November 1799 ) is considered the end of the French Revolution. Another famous revolutionary date is 9 Thermidor , the date the Convention turned against Robespierre , who, along with others associated with The Mountain , was Guillotine d the following day. (''See Glossary Of The French Revolution for other significant dates under this calendar.'')

Emile Zola 's novel '' Germinal '' takes its name from the calendar, as does the dish, Lobster Thermidor .


THE MONTHS

The Republican calendar year began at the Autumn Equinox and had twelve months of 30 days each, which were given new names based on nature:

  • Autumn:

  • --- Vendémiaire (from Latin ''vindemia'', "vintage") Starting Sept 22 , 23 or 24

  • --- Brumaire (from French ''brume'', "mist") Starting Oct 22 , 23 or 24

  • --- Frimaire (From French ''frimas'', "frost") Starting Nov 21 , 22 or 23

  • Winter:

  • --- Nivôse (from Latin ''Nivosus'', "snowy") Starting Dec 21 , 22 or 23

  • --- Pluviôse (from Latin ''pluviosus'', "rainy") Starting Jan 20 , 21 or 22

  • --- Ventôse (from Latin ''ventosus'', "windy") Starting Feb 19 , 20 or 21

  • Spring:

  • --- Germinal (from Latin ''germen'', "seed") Starting Mar 20 or 21

  • --- Floréal (from Latin ''flos'', "flower") Starting Apr 20 or 21

  • --- Prairial (from French ''prairie'', "meadow") Starting May 20 or 21

  • Summer:

  • --- Messidor (from Latin ''messis'', "harvest") Starting Jun 19 or 20

  • --- Thermidor (from Greek ''thermos'', "hot") Starting Jul 19 or 20

  • --- Fructidor (from Latin ''fructus'', "fruits") Starting Aug 18 or 19


Note that the English names are approximate, as most of the month names were new words coined from similar French , Latin or Greek words. The endings of the names are grouped by season.

In England, people against the Revolution mocked the calendar by calling the months: Wheezy, Sneezy and Freezy; Slippy, Drippy and Nippy; Showery, Flowery and Bowery; Wheaty, Heaty and Sweety.


THE TEN DAYS OF THE WEEK

The month is divided into three ''decades'' or 'weeks' of ten days each, named simply:
  • ''primidi'' (first day)

  • ''duodi'' (second day)

  • ''tridi'' (third day)

  • ''quartidi'' (fourth day)

  • ''quintidi'' (fifth day)

  • ''sextidi'' (sixth day)

  • ''septidi'' (seventh day)

  • ''octidi'' (eighth day)

  • ''nonidi'' (ninth day)

  • ''décadi'' (tenth day)



THE DAYS OF THE YEAR

Instead of most days having a Saint as in the Catholic Church's calendar, each day has an animal (days ending in 5), a tool (days ending in 0) or else a plant or mineral (all other days) associated with it.


Autumn



Winter



Spring



Summer



EXTRA DAYS

Five extra days (six in Leap Year s) were national holidays at the end of every year. These were originally known as ''les sans-culottides'' (after '' Sans-culottes ''), but after year III (1795) as ''les jours complémentaires'':



CONVERTING TO GREGORIAN CALENDAR


The calendar was abolished in the year XIV (1805). After this date, opinions seem to differ on the method by which the leap years would have been determined if the calendar were still in force. There are several hypotheses used to convert dates to the Gregorian calendar, of which these three seem to be the most significant:

  • The leap years would continue to vary in order to ensure that each year the autumnal equinox falls on 1 Vendémiaire, as was the case from year I to year XIV.

  • The leap year would have jumped after year 15 to year 20, after which a leap year would have fallen on each year divisible by four (thus in 20, 24, 28...), except most century years, according to Romme's proposed fixed rules. This would have simplified conversions between the Republican and Gregorian calendars since the Republican leap day would usually follow a few months after 29 February , at the end of each year divisible by four.

  • The leap years would have continued in a fixed rule every four years from the last one (thus years 15, 19, 23, 27...) with the leap day added before each year divisible by four, except most century years.


Below are the Gregorian calendar dates several Republican years begin according to these methods:


THE FRENCH REPUBLICAN CALENDAR IN FICTION

The Shared World of Liavek uses a calendar which is a simple adaptation of the French Republican calendar. It consists of twelve months of 30 days, called Snow, Rain, Wind, Buds, Flowers, Meadows, Reaping, Heat, Fruit, Wine, Fog and Frost. The year begins at the winter solstice, with five days of festival (Festival Week). Every four years is the Grand Festival, which lasts an extra day. There are six weeks of five days: Sunday, Moonday, Windday, Rainday, and Luckday.


SEE ALSO



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