GLSCORE
Pattern

Pattern results

Months with the same calendar as December 2009

December 2009 begins on Tuesday and has 31 days. These months share the same layout.

Base month December 2009
Days in month 31
Matching months 200

What this month pattern shows

These facts explain why the matching months line up with the base month calendar.

Base month
December 2009
Days in month
31
Opening weekday
Tuesday
Matching months
200
First match
May 1900
Last match
December 2099

200 months in the archive share the same calendar layout as December 2009.

Matching month calendars

These matching month calendars are grouped by year range so the archive is easier to scan.

1900-1999 100 matches
May 1900 January 1901 October 1901 July 1902 December 1903 March 1904 August 1905 May 1906 January 1907 October 1907 December 1908 March 1910 August 1911 October 1912 July 1913 December 1914 August 1916 May 1917 January 1918 October 1918 July 1919 March 1921 August 1922 May 1923 January 1924 July 1924 December 1925 March 1927 May 1928 January 1929 October 1929 July 1930 December 1931 March 1932 August 1933 May 1934 January 1935 October 1935 December 1936 March 1938 August 1939 October 1940 July 1941 December 1942 August 1944 May 1945 January 1946 October 1946 July 1947 March 1949 August 1950 May 1951 January 1952 July 1952 December 1953 March 1955 May 1956 January 1957 October 1957 July 1958 December 1959 March 1960 August 1961 May 1962 January 1963 October 1963 December 1964 March 1966 August 1967 October 1968 July 1969 December 1970 August 1972 May 1973 January 1974 October 1974 July 1975 March 1977 August 1978 May 1979 January 1980 July 1980 December 1981 March 1983 May 1984 January 1985 October 1985 July 1986 December 1987 March 1988 August 1989 May 1990 January 1991 October 1991 December 1992 March 1994 August 1995 October 1996 July 1997 December 1998
2000-2030 31 matches
August 2000 May 2001 January 2002 October 2002 July 2003 March 2005 August 2006 May 2007 January 2008 July 2008 March 2011 May 2012 January 2013 October 2013 July 2014 December 2015 March 2016 August 2017 May 2018 January 2019 October 2019 December 2020 March 2022 August 2023 October 2024 July 2025 December 2026 August 2028 May 2029 January 2030 October 2030
2031-2050 20 matches
July 2031 March 2033 August 2034 May 2035 January 2036 July 2036 December 2037 March 2039 May 2040 January 2041 October 2041 July 2042 December 2043 March 2044 August 2045 May 2046 January 2047 October 2047 December 2048 March 2050
2051-2100 49 matches
August 2051 October 2052 July 2053 December 2054 August 2056 May 2057 January 2058 October 2058 July 2059 March 2061 August 2062 May 2063 January 2064 July 2064 December 2065 March 2067 May 2068 January 2069 October 2069 July 2070 December 2071 March 2072 August 2073 May 2074 January 2075 October 2075 December 2076 March 2078 August 2079 October 2080 July 2081 December 2082 August 2084 May 2085 January 2086 October 2086 July 2087 March 2089 August 2090 May 2091 January 2092 July 2092 December 2093 March 2095 May 2096 January 2097 October 2097 July 2098 December 2099

Use this month pattern

These links are most useful when you want to compare matching month layouts quickly.

  • Open any matching month calendar to compare the full layout with December 2009.
  • Use the opening dates to verify the same weekday sequence from day 1 onward.
  • Return to the base month calendar when you need the exact day-by-day context.

Matching opening dates

The first day of each matching month starts the same layout.

1 May 1900 1 January 1901 1 October 1901 1 July 1902 1 December 1903 1 March 1904 1 August 1905 1 May 1906 1 January 1907 1 October 1907 1 December 1908 1 March 1910

Explore related pages

These links connect the pattern back to the main archive entities.

Core archive links

Related patterns