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Years, Leap Years, Number of Days and Weeks in a Year

List of years 1800-2100

ISO weeks: Number of weeks according to ISO-8601 (weeks starting on Monday). The first week is the week with a Thursday in the new year (first 4-day week).
Leap years: Every year that is divisible by four is a leap year, except for years that are divisible by 100, but not by 400.

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Year Nr of days Nr of ISO weeks Leap year Leap Year Cycle
1800 365 52 Year IV
1801 365 53 Year I
1802 365 52 Year II
1803 365 52 Year III
1804 366 52 Yes Year IV
1805 365 52 Year I
1806 365 52 Year II
1807 365 53 Year III
1808 366 52 Yes Year IV
1809 365 52 Year I
1810 365 52 Year II
1811 365 52 Year III
1812 366 53 Yes Year IV
1813 365 52 Year I
1814 365 52 Year II
1815 365 52 Year III
1816 366 52 Yes Year IV
1817 365 52 Year I
1818 365 53 Year II
1819 365 52 Year III
1820 366 52 Yes Year IV
1821 365 52 Year I
1822 365 52 Year II
1823 365 52 Year III
1824 366 53 Yes Year IV
1825 365 52 Year I
1826 365 52 Year II
1827 365 52 Year III
1828 366 52 Yes Year IV
1829 365 53 Year I
1830 365 52 Year II
1831 365 52 Year III
1832 366 52 Yes Year IV
1833 365 52 Year I
1834 365 52 Year II
1835 365 53 Year III
1836 366 52 Yes Year IV
1837 365 52 Year I
1838 365 52 Year II
1839 365 52 Year III
1840 366 53 Yes Year IV
1841 365 52 Year I
1842 365 52 Year II
1843 365 52 Year III
1844 366 52 Yes Year IV
1845 365 52 Year I
1846 365 53 Year II
1847 365 52 Year III
1848 366 52 Yes Year IV
1849 365 52 Year I
1850 365 52 Year II
1851 365 52 Year III
1852 366 53 Yes Year IV
1853 365 52 Year I
1854 365 52 Year II
1855 365 52 Year III
1856 366 52 Yes Year IV
1857 365 53 Year I
1858 365 52 Year II
1859 365 52 Year III
1860 366 52 Yes Year IV
1861 365 52 Year I
1862 365 52 Year II
1863 365 53 Year III
1864 366 52 Yes Year IV
1865 365 52 Year I
1866 365 52 Year II
1867 365 52 Year III
1868 366 53 Yes Year IV
1869 365 52 Year I
1870 365 52 Year II
1871 365 52 Year III
1872 366 52 Yes Year IV
1873 365 52 Year I
1874 365 53 Year II
1875 365 52 Year III
1876 366 52 Yes Year IV
1877 365 52 Year I
1878 365 52 Year II
1879 365 52 Year III
1880 366 53 Yes Year IV
1881 365 52 Year I
1882 365 52 Year II
1883 365 52 Year III
1884 366 52 Yes Year IV
1885 365 53 Year I
1886 365 52 Year II
1887 365 52 Year III
1888 366 52 Yes Year IV
1889 365 52 Year I
1890 365 52 Year II
1891 365 53 Year III
1892 366 52 Yes Year IV
1893 365 52 Year I
1894 365 52 Year II
1895 365 52 Year III
1896 366 53 Yes Year IV
1897 365 52 Year I
1898 365 52 Year II
1899 365 52 Year III
1900 365 52 Year IV
1901 365 52 Year I
1902 365 52 Year II
1903 365 53 Year III
1904 366 52 Yes Year IV
1905 365 52 Year I
1906 365 52 Year II
1907 365 52 Year III
1908 366 53 Yes Year IV
1909 365 52 Year I
1910 365 52 Year II
1911 365 52 Year III
1912 366 52 Yes Year IV
1913 365 52 Year I
1914 365 53 Year II
1915 365 52 Year III
1916 366 52 Yes Year IV
1917 365 52 Year I
1918 365 52 Year II
1919 365 52 Year III
1920 366 53 Yes Year IV
1921 365 52 Year I
1922 365 52 Year II
1923 365 52 Year III
1924 366 52 Yes Year IV
1925 365 53 Year I
1926 365 52 Year II
1927 365 52 Year III
1928 366 52 Yes Year IV
1929 365 52 Year I
1930 365 52 Year II
1931 365 53 Year III
1932 366 52 Yes Year IV
1933 365 52 Year I
1934 365 52 Year II
1935 365 52 Year III
1936 366 53 Yes Year IV
1937 365 52 Year I
1938 365 52 Year II
1939 365 52 Year III
1940 366 52 Yes Year IV
1941 365 52 Year I
1942 365 53 Year II
1943 365 52 Year III
1944 366 52 Yes Year IV
1945 365 52 Year I
1946 365 52 Year II
1947 365 52 Year III
1948 366 53 Yes Year IV
1949 365 52 Year I
1950 365 52 Year II
1951 365 52 Year III
1952 366 52 Yes Year IV
1953 365 53 Year I
1954 365 52 Year II
1955 365 52 Year III
1956 366 52 Yes Year IV
1957 365 52 Year I
1958 365 52 Year II
1959 365 53 Year III
1960 366 52 Yes Year IV
1961 365 52 Year I
1962 365 52 Year II
1963 365 52 Year III
1964 366 53 Yes Year IV
1965 365 52 Year I
1966 365 52 Year II
1967 365 52 Year III
1968 366 52 Yes Year IV
1969 365 52 Year I
1970 365 53 Year II
1971 365 52 Year III
1972 366 52 Yes Year IV
1973 365 52 Year I
1974 365 52 Year II
1975 365 52 Year III
1976 366 53 Yes Year IV
1977 365 52 Year I
1978 365 52 Year II
1979 365 52 Year III
1980 366 52 Yes Year IV
1981 365 53 Year I
1982 365 52 Year II
1983 365 52 Year III
1984 366 52 Yes Year IV
1985 365 52 Year I
1986 365 52 Year II
1987 365 53 Year III
1988 366 52 Yes Year IV
1989 365 52 Year I
1990 365 52 Year II
1991 365 52 Year III
1992 366 53 Yes Year IV
1993 365 52 Year I
1994 365 52 Year II
1995 365 52 Year III
1996 366 52 Yes Year IV
1997 365 52 Year I
1998 365 53 Year II
1999 365 52 Year III
2000 366 52 Yes Year IV
2001 365 52 Year I
2002 365 52 Year II
2003 365 52 Year III
2004 366 53 Yes Year IV
2005 365 52 Year I
2006 365 52 Year II
2007 365 52 Year III
2008 366 52 Yes Year IV
2009 365 53 Year I
2010 365 52 Year II
2011 365 52 Year III
2012 366 52 Yes Year IV
2013 365 52 Year I
2014 365 52 Year II
2015 365 53 Year III
2016 366 52 Yes Year IV
2017 365 52 Year I
2018 365 52 Year II
2019 365 52 Year III
2020 366 53 Yes Year IV
2021 365 52 Year I
2022 365 52 Year II
2023 365 52 Year III
2024 366 52 Yes Year IV
2025 365 52 Year I
2026 365 53 Year II
2027 365 52 Year III
2028 366 52 Yes Year IV
2029 365 52 Year I
2030 365 52 Year II
2031 365 52 Year III
2032 366 53 Yes Year IV
2033 365 52 Year I
2034 365 52 Year II
2035 365 52 Year III
2036 366 52 Yes Year IV
2037 365 53 Year I
2038 365 52 Year II
2039 365 52 Year III
2040 366 52 Yes Year IV
2041 365 52 Year I
2042 365 52 Year II
2043 365 53 Year III
2044 366 52 Yes Year IV
2045 365 52 Year I
2046 365 52 Year II
2047 365 52 Year III
2048 366 53 Yes Year IV
2049 365 52 Year I
2050 365 52 Year II
2051 365 52 Year III
2052 366 52 Yes Year IV
2053 365 52 Year I
2054 365 53 Year II
2055 365 52 Year III
2056 366 52 Yes Year IV
2057 365 52 Year I
2058 365 52 Year II
2059 365 52 Year III
2060 366 53 Yes Year IV
2061 365 52 Year I
2062 365 52 Year II
2063 365 52 Year III
2064 366 52 Yes Year IV
2065 365 53 Year I
2066 365 52 Year II
2067 365 52 Year III
2068 366 52 Yes Year IV
2069 365 52 Year I
2070 365 52 Year II
2071 365 53 Year III
2072 366 52 Yes Year IV
2073 365 52 Year I
2074 365 52 Year II
2075 365 52 Year III
2076 366 53 Yes Year IV
2077 365 52 Year I
2078 365 52 Year II
2079 365 52 Year III
2080 366 52 Yes Year IV
2081 365 52 Year I
2082 365 53 Year II
2083 365 52 Year III
2084 366 52 Yes Year IV
2085 365 52 Year I
2086 365 52 Year II
2087 365 52 Year III
2088 366 53 Yes Year IV
2089 365 52 Year I
2090 365 52 Year II
2091 365 52 Year III
2092 366 52 Yes Year IV
2093 365 53 Year I
2094 365 52 Year II
2095 365 52 Year III
2096 366 52 Yes Year IV
2097 365 52 Year I
2098 365 52 Year II
2099 365 53 Year III
2100 365 52 Year IV

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