Editing French Republican calendar (section)

== Conversion to conventional timekeeping ==

===During the Republic ===

[[File:Fontaine d'Octon.JPG|thumb|Fountain in [[Octon, Hérault]], with date ''5 Ventôse an 109'' (24 February 1901)]]

Below are the Gregorian dates each year of the Republican Era (''Ère Républicaine'' in French) began while the calendar was in effect.

{| class="wikitable"
|- style="background:#CCCCFF;"
! ER
! AD/CE
|-
| I (1)
| 22 September 1792
|-
| II (2)
| 22 September 1793
|-
| III (3)
| {{yes2}} 22 September 1794
|-
| IV (4)
| 23 September 1795*
|-
| V (5)
| 22 September 1796
|-
| VI (6)
| 22 September 1797
|-
| VII (7)
| {{yes2}} 22 September 1798
|-
| VIII (8)
| 23 September 1799*
|-
| IX (9)
| 23 September 1800
|-
| X (10)
| 23 September 1801
|-
| XI (11)
| {{yes2}} 23 September 1802
|-
| XII (12)
| 24 September 1803*
|-
| XIII (13)
| 23 September 1804
|-
| XIV (14)
| 23 September 1805
|-
|| ||
|-
| LXXIX (79)
| 23 September 1870
|} Leap years are highlighted
* Extra (sextile) day inserted before date, due to previous leap year<ref>{{cite book |last1=Parise |first1=Frank |title=The Book of Calendars |date=2002 |publisher=Gorgias Press |isbn=978-1-931956-76-5 |pages=376}}</ref>

===After the Republic===

The Republican Calendar was abolished in the year XIV (1805). After this year, there are two historically attested calendars which may be used to determine dates. Both calendars gave the same dates for years 17 to 52 (1808–1844), always beginning on 23 September, and it was suggested, but never adopted, that the reformed calendar be implemented during this period, before the Republican Calendar was abolished.
* '' Republican Calendar:'' The only legal calendar during the Republic. The first day of the year, 1 Vendémiaire, is always the day the autumn equinox occurs in Paris. About every 30 years, leap years are 5 years apart instead of 4, as happened between the leap years 15 and 20.<ref>{{cite book |url=https://books.google.com/books?id=Aec6AAAAcAAJ |title=Concordance de l'Annuaire de la République française avec le calendrier grégorien |author=Sébastien Louis Rosaz |date=1810}}</ref> The lengths of the first 524 years were calculated by [[Jean Baptiste Joseph Delambre]].
* ''Reformed Republican Calendar:'' Following a proposal by Delambre in order to make leap years regular and predictable, with leap years being every year divisible by 4, except years divisible by 100 and not by 400. Years divisible by 4000 would also be ordinary years. Intended to be implemented in year 3, the reformed calendar was abandoned after the death of Romme, the head of the calendar committee. This calendar also has the benefit that every year in the third century of the Republican Era (1992–2091) begins on 22 September.<ref>{{cite web |url=http://prairial.free.fr/calendrier/calendrier.php?lien=discoursromme |title=Brumaire – Calendrier Républicain |publisher=Prairial.free.fr |access-date=30 January 2009 |archive-url=https://web.archive.org/web/20110518123151/http://prairial.free.fr/calendrier/calendrier.php?lien=discoursromme |archive-date=18 May 2011 |url-status=dead }}</ref>

{| class="wikitable"
|- style="background:#CCCCFF;"
! ER
! AD/CE
! Republican
! Reformed
|-
|
XV (15)
|
1806
| {{yes2}} 
23 September
|
23 September
|-
|
XVI (16)
|
1807
|
24 September*
| {{yes2}} 
23 September
|-
|
XVII (17)
|
1808
|
23 September
|
23 September*
|-
|
XVIII (18)
|
1809
|
23 September
|
23 September
|-
|
XIX (19)
|
1810
|
23 September
|
23 September
|-
|
XX (20)
|
1811
| {{yes2}} 
23 September
| {{yes2}} 
23 September
|-
|| || || |
|-
|
CCXXIX (229)
|
2020
|
22 September
|
22 September*
|-
|
CCXXX (230)
|
2021
| {{yes2}} 
22 September
|
22 September
|-
|
CCXXXI (231)
|
2022
|
23 September*
|
22 September
|-
|
CCXXXII (232)
|
2023
|
23 September
| {{yes2}} 
22 September
|-
|
CCXXXIII (233)
|
2024
|
22 September
|
22 September*
|-
|
CCXXXIV (234)
|
2025
| {{yes2}} 
22 September
|
22 September
|-
|
CCXXXV (235)
|
2026
|
23 September*
|
22 September
|-
|
CCXXXVI (236)
|
2027
|
23 September
| {{yes2}} 
22 September
|-
|
CCXXXVII (237)
|
2028
|
22 September
|
22 September*
|-
|
CCXXXVIII (238)
|
2029
|
22 September
|
22 September
|-
|
CCXXXIX (239)
|
2030
| {{yes2}} 
22 September
|
22 September
|-
|
CCXL (240)
|
2031
|
23 September*
| {{yes2}} 
22 September
|-
|
CCXLI (241)
|
2032
|
22 September
|
22 September*
|}Leap years are highlighted
* Extra (sextile) day inserted before date, due to previous leap year

=== Current date and time ===
For this calendar, Delambre's revised method of calculating leap years is used. Other methods may differ by one day. Time may be cached and therefore not accurate. Decimal time is according to Paris mean time, which is 9 minutes 21 seconds (6.49 decimal minutes) ahead of [[Greenwich Mean Time]]. ([https://en.wikipedia.org/w/index.php?title=French_Republican_calendar&action=purge This tool] calibrates the time, if calibration is desired.)

{{Republican Calendar}}
{| style="margin:auto;"
|}