June 5, 1792 - October 12, 1796
October 13, 1796 - September 5, 1804
September 7, 1804 - March 1, 1807
March 1, 1807 - February 22, 1808
February 23, 1808 - September 1, 1808
September 1, 1808 - July 26, 1812
July 27, 1812 - September 1, 1812
September 1, 1812 - December 15, 1812; March 13, 1813 - September 4, 1816
February 3, 1813 - March 13, 1813
September 5, 1816 - October 20, 1816
October 21, 1816 - August 2, 1819
August 2, 1819 - September 1, 1820
September 2, 1820 - September 1, 1823
September 2, 1823 - September 1, 1824
September 2, 1824 - February 3, 1825
February 4, 1825 - September 2, 1828
September 6, 1828 - December 1828
December 1828 - March 1832
March 1832 - September 4, 1832
September 4, 1832 - April 1834
April 1834 - February 1835
March 1835 - February 1836
February 1836 - August 31, 1836
September 1, 1836 - September 2, 1840
September 3, 1840 - September 3, 1844
September 4, 1844 - September 1, 1846
September 1, 1846 - April 7, 1847
April 9, 1847 - September 6, 1848
September 7, 1848 - June 30, 1849
July 2, 1849 - March 16, 1850
March 16, 1850 - August 31, 1851
September 3, 1851 - July 5, 1852
July 5, 1852 - May 2, 1854
May 3, 1854 - September 2, 1855
September 3, 1855 - August 29, 1859
August 30, 1859 - October 1, 1861
October 2, 1861 - August 18, 1862
August 19, 1862 - September 1, 1863
September 1, 1863 - May 23, 1866
May 24, 1866 - September 2, 1867
September 3, 1867 - September 4, 1871; September 1, 1879 - April 1880
September 5, 1871 - June 10, 1872
June 10, 1872 - August 1, 1875
August 1, 1875 - August 31, 1875; September 1, 1875 - September 2, 1879
May 6, 1880 - September 4, 1883
September 5, 1883 - August 30, 1887
September 3, 1887 - August 25, 1891
August 25, 1891 - August 31, 1891
September 1, 1891 - December 10, 1895; December 11, 1895 - January 1, 1896
January 1, 1896 - December 10, 1899; December 12, 1899 - December 29, 1899
January 1, 1900 - May 21, 1900
February 26, 1900 - January 3, 1904
January 4, 1904 - January 1, 1908
January 1, 1908 - January 1, 1912
January 1, 1912 - January 1, 1916
January 1, 1916 - January 1, 1920
January 1, 1920 - January 1, 1924
January 1, 1924 - January 1, 1928
January 1, 1928 - January 1, 1932
January 1, 1932 - January 1, 1936
January 1, 1936 - January 1, 1940
January 1, 1940 - January 1, 1944; January 1, 1948 - January 1, 1952
January 1, 1944 - January 1, 1948; January 1, 1952 - January 1, 1956
January 1956 - January, 1960; January 1964 - January 1968; January 1972 - January 1976
January 1, 1960 - January 1, 1964
January 1, 1968 - September 18, 1970
September 21, 1970 - February 2, 1971
February 2, 1971 - January 1, 1972
January 1, 1976 - January 1, 1980; January 1, 1984 - January 1, 1988
January 1, 1980 - January 1,1984
January 1, 1988 - January 1, 1992
January 1, 1992 - January 1, 1996
January 1, 1996 - January 1, 2000; January 1, 2000 - January 4, 2004
January 5, 2004 - January 6, 2008; January 7, 2008 - January 29, 2011 (11:59 a.m.)
January 29, 2011 (12:00 p.m.) - January 1, 2012
January 2, 2012 - January 5, 2020
January 6, 2020 - Current
