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This is the calendar for any 'common year starting on Friday' (dominical letter 'C'). Examples: Gregorian years 2021 & 2010 or Julian years 1910 & 1899 (see bottom tables).
A common year is a year with 365 days, i.e. not a leap year.

Millennium	Century	Gregorian Year
'2nd Millennium':	'19th century':	1802	1813	1819	1830	1841	1847	1858	1869	1875	1886	1897
'2nd Millennium':	'20th century':	1909	1915	1926	1937	1943	1954	1965	1971	1982	1993	1999
'3rd Millennium':	'21st century':	2010	2021	2027	2038	2049	2055	2066	2077	2083	2094	2100
'3rd Millennium':	'22nd century':	2106	2117	2123	2134	2145	2151	2162	2173	2179	2190

Millennium	Century	Julian Year [1]
'2nd Millennium':	'19th century':	1809	1815	1826	1837	1843	1854	1865	1871	1882	1893	1899
'2nd Millennium':	'20th century':	1910	1921	1927	1938	1949	1955	1966	1977	1983	1994
'3rd Millennium':	'21st century':	2005	2011	2022	2033	2039	2050	2061	2067	2078	2089	2095
'3rd Millennium':	'22nd century':	2106	2117	2123	2134	2145	2151	2162	2173	2179	2190

This is the only year type where the ''n''th "Doomsday" (this year Sunday) is not in ISO week ''n''; it is in ISO week ''n''-1.

Contents

Notes

Notes

1. "Calendar in year 1809 (Russia)" (Julian calendar, starting Tuesday), webpage: Julian-1809 (Romania used Julian in 1919, when Russia adopted Gregorian).