koshko.com -- Rick Wiegmann Koshko's personal web site -- calendar section

The personal web site of Rick Koshko (married name Rick Wiegmann Koshko).
To email me, click here for the email form.
I currently use these social networks: LinkedIn, Twitter, Facebook.
My compendium of links to useful, interesting, and cool web sites.

Day-of-the-week formula
Day-of-week calculator
Possible dates for day, month, and year
Possible months for a day, date, and year
Possible years for a day, month, and date
Days between dates
Easter date calculator
400-year perpetual calendar
Gregorian Calendar Lookup
Julian Day number calculator

To contact me
Click here for the email form.

Gregorian Calendar Lookup

Use this table to look up which of the 14 possible calendars is the right one for a given year. This table is for the Gregorian Calendar. You may add or subtract 400 to any given year until it falls within the range of this table to find the right calendar. In other words: 1400, 1800, & 2200 would all use calendar 4. Be careful extending backwards. The Gregorian calendar wasn't in use anywhere until 1582 and some countries didn't adopt it until the 1900s.

Click on these links to look at the calendar needed:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

1800 4 1801 5 1802 6 1803 7 1804 8 1805 3 1806 4 1807 5 1808 13 1809 1 1810 2 1811 3 1812 11 1813 6 1814 7 1815 1 1816 9 1817 4 1818 5 1819 6 1820 14 1821 2 1822 3 1823 4 1824 12	1825 7 1826 1 1827 2 1828 10 1829 5 1830 6 1831 7 1832 8 1833 3 1834 4 1835 5 1836 13 1837 1 1838 2 1839 3 1840 11 1841 6 1842 7 1843 1 1844 9 1845 4 1846 5 1847 6 1848 14 1849 2	1850 3 1851 4 1852 12 1853 7 1854 1 1855 2 1856 10 1857 5 1858 6 1859 7 1860 8 1861 3 1862 4 1863 5 1864 13 1865 1 1866 2 1867 3 1868 11 1869 6 1870 7 1871 1 1872 9 1873 4 1874 5	1875 6 1876 14 1877 2 1878 3 1879 4 1880 12 1881 7 1882 1 1883 2 1884 10 1885 5 1886 6 1887 7 1888 8 1889 3 1890 4 1891 5 1892 13 1893 1 1894 2 1895 3 1896 11 1897 6 1898 7 1899 1	1900 2 1901 3 1902 4 1903 5 1904 13 1905 1 1906 2 1907 3 1908 11 1909 6 1910 7 1911 1 1912 9 1913 4 1914 5 1915 6 1916 14 1917 2 1918 3 1919 4 1920 12 1921 7 1922 1 1923 2 1924 10	1925 5 1926 6 1927 7 1928 8 1929 3 1930 4 1931 5 1932 13 1933 1 1934 2 1935 3 1936 11 1937 6 1938 7 1939 1 1940 9 1941 4 1942 5 1943 6 1944 14 1945 2 1946 3 1947 4 1948 12 1949 7	1950 1 1951 2 1952 10 1953 5 1954 6 1955 7 1956 8 1957 3 1958 4 1959 5 1960 13 1961 1 1962 2 1963 3 1964 11 1965 6 1966 7 1967 1 1968 9 1969 4 1970 5 1971 6 1972 14 1973 2 1974 3	1975 4 1976 12 1977 7 1978 1 1979 2 1980 10 1981 5 1982 6 1983 7 1984 8 1985 3 1986 4 1987 5 1988 13 1989 1 1990 2 1991 3 1992 11 1993 6 1994 7 1995 1 1996 9 1997 4 1998 5 1999 6

2000 14 2001 2 2002 3 2003 4 2004 12 2005 7 2006 1 2007 2 2008 10 2009 5 2010 6 2011 7 2012 8 2013 3 2014 4 2015 5 2016 13 2017 1 2018 2 2019 3 2020 11 2021 6 2022 7 2023 1 2024 9	2025 4 2026 5 2027 6 2028 14 2029 2 2030 3 2031 4 2032 12 2033 7 2034 1 2035 2 2036 10 2037 5 2038 6 2039 7 2040 8 2041 3 2042 4 2043 5 2044 13 2045 1 2046 2 2047 3 2048 11 2049 6	2050 7 2051 1 2052 9 2053 4 2054 5 2055 6 2056 14 2057 2 2058 3 2059 4 2060 12 2061 7 2062 1 2063 2 2064 10 2065 5 2066 6 2067 7 2068 8 2069 3 2070 4 2071 5 2072 13 2073 1 2074 2	2075 3 2076 11 2077 6 2078 7 2079 1 2080 9 2081 4 2082 5 2083 6 2084 14 2085 2 2086 3 2087 4 2088 12 2089 7 2090 1 2091 2 2092 10 2093 5 2094 6 2095 7 2096 8 2097 3 2098 4 2099 5	2100 6 2101 7 2102 1 2103 2 2104 10 2105 5 2106 6 2107 7 2108 8 2109 3 2110 4 2111 5 2112 13 2113 1 2114 2 2115 3 2116 11 2117 6 2118 7 2119 1 2120 9 2121 4 2122 5 2123 6 2124 14	2125 2 2126 3 2127 4 2128 12 2129 7 2130 1 2131 2 2132 10 2133 5 2134 6 2135 7 2136 8 2137 3 2138 4 2139 5 2140 13 2141 1 2142 2 2143 3 2144 11 2145 6 2146 7 2147 1 2148 9 2149 4	2150 5 2151 6 2152 14 2153 2 2154 3 2155 4 2156 12 2157 7 2158 1 2159 2 2160 10 2161 5 2162 6 2163 7 2164 8 2165 3 2166 4 2167 5 2168 13 2169 1 2170 2 2171 3 2172 11 2173 6 2174 7	2175 1 2176 9 2177 4 2178 5 2179 6 2180 14 2181 2 2182 3 2183 4 2184 12 2185 7 2186 1 2187 2 2188 10 2189 5 2190 6 2191 7 2192 8 2193 3 2194 4 2195 5 2196 13 2197 1 2198 2 2199 3