Guide to the Records of the U.S. Senate at the National Archives (Record Group 46)
Appendix F: Dates of the Sessions of the U.S. Congress, 1789-1988
Congress Beginning Date Ending Date
1st Mar. 4, 1789 Mar. 3, 1791
2d Oct. 24, 1791 Mar. 2, 1793
3d Dec. 2, 1793 Mar. 3, 1795
4th Dec. 7, 1795 Mar. 3, 1797
5th May 15, 1797 Mar. 3, 1799
6th Dec. 2, 1799 Mar. 3, 1801
7th Dec. 7, 1801 Mar. 3, 1803
8th Oct. 17, 1803 Mar. 3, 1805
9th Dec. 2, 1805 Mar. 3, 1807
10th Oct. 26, 1807 Mar. 3, 1809
11th May 22, 1809 Mar. 3, 1811
12th Nov. 4, 1811 Mar. 3, 1813
13th May 24, 1813 Mar. 3, 1815
14th Dec. 4, 1815 Mar. 3, 1817
15th Dec. 1, 1817 Mar. 3, 1819
16th Dec. 6, 1819 Mar. 3, 1821
17th Dec. 3, 1821 Mar. 3, 1823
18th Dec. 1, 1823 Mar. 3, 1825
19th Dec. 5, 1825 Mar. 3, 1827
20th Dec. 3, 1827 Mar. 3, 1829
21st Dec. 7, 1829 Mar. 3, 1831
22d Dec. 5, 1831 Mar. 2, 1833
23d Dec. 2, 1833 Mar. 3, 1835
24th Dec. 7, 1835 Mar. 3, 1837
25th Sept. 4, 1837 Mar. 3, 1839
26th Dec. 2, 1839 Mar. 3, 1841
27th May 31, 1841 Mar. 3, 1843
28th Dec. 4, 1843 Mar. 3, 1845
29th Dec. 1, 1845 Mar. 3, 1847
30th Dec. 6, 1847 Mar. 3, 1849
31st Dec. 3, 1849 Mar. 3, 1851
32d Dec. 1, 1851 Mar. 3, 1853
33d Dec. 5, 1853 Mar. 3, 1855
34th Dec. 3, 1855 Mar. 3, 1857
35th Dec. 7, 1857 Mar. 3, 1859
36th Dec. 5, 1859 Mar. 3, 1861
37th July 4, 1861 Mar. 3, 1863
38th Dec. 7, 1863 Mar. 3, 1865
39th Dec. 4, 1865 Mar. 3, 1867
40th Mar. 4, 1867 Mar. 3, 1869
41st Mar. 4, 1869 Mar. 3, 1871
42d Mar. 4, 1871 Mar. 3, 1873
43d Dec. 1, 1873 Mar. 3, 1875
44th Dec. 6, 1875 Mar. 3, 1877
45th Oct. 15, 1877 Mar. 3, 1879
46th Mar. 18, 1879 Mar. 3, 1881
47th Dec. 5, 1881 Mar. 3, 1883
48th Dec. 3, 1883 Mar. 3, 1885
49th Dec. 7, 1885 Mar. 3, 1887
50th Dec. 5, 1887 Mar. 3, 1889
51st Dec. 2, 1889 Mar. 3, 1891
52d Dec. 7, 1891 Mar. 3, 1893
53d Aug. 7, 1893 Mar. 3, 1895
54th Dec. 2, 1895 Mar. 3, 1897
55th Mar. 15, 1897 Mar. 3, 1899
56th Dec. 4, 1899 Mar. 3, 1901
57th Dec. 2, 1901 Mar. 3, 1903
58th Nov. 9, 1903 Mar. 3, 1905
59th Dec. 4, 1905 Mar. 3, 1907
60th Dec. 2, 1907 Mar. 3, 1909
61st Mar. 15, 1909 Mar. 3, 1911
62d Apr. 4, 1911 Mar. 3, 1913
63d Apr. 7, 1913 Mar. 3, 1915
64th Dec. 6, 1915 Mar. 3, 1917
65th Apr. 2, 1917 Mar. 3, 1919
66th May 19, 1919 Mar. 3, 1921
67th Apr. 11, 1921 Mar. 3, 1923
68th Dec. 3, 1923 Mar. 3, 1925
69th Dec. 7, 1925 Mar. 3, 1927
70th Dec. 5, 1927 Mar. 3, 1929
71st Apr. 15, 1929 Mar. 3, 1931
72d Dec. 7, 1931 Mar. 3, 1933
73d Mar. 9, 1933 June 18, 1934
74th Jan. 3, 1935 June 20, 1936
75th Jan. 5, 1937 June 16, 1938
76th Jan. 3, 1939 Jan. 3, 1941
77th Jan. 3, 1941 Dec. 16, 1942
78th Jan. 6, 1943 Dec. 19, 1944
79th Jan. 3, 1945 Aug. 2, 1946
80th Jan. 3, 1947 Dec. 31, 1948
81st Jan. 3, 1949 Jan. 2, 1951
82d Jan. 3, 1951 July 7, 1952
83d Jan. 3, 1953 Dec. 2, 1954
84th Jan. 5, 1955 July 27, 1956
85th Jan. 3, 1957 Aug. 24, 1958
86th Jan. 7, 1959 Sept. 1, 1960
87th Jan. 3, 1961 Oct. 13, 1962
88th Jan. 9, 1963 Oct. 3, 1964
89th Jan. 4, 1965 Oct. 22, 1966
90th Jan. 10, 1967 Oct. 14, 1968
91st Jan. 3, 1969 Jan. 2, 1971
92d Jan. 21, 1971 Oct. 18, 1972
93d Jan. 3, 1973 Dec. 20, 1974
94th Jan. 14, 1975 Oct. 1, 1976
95th Jan. 4, 1977 Oct. 15, 1978
96th Jan. 15, 1979 Dec. 16, 1980
97th Jan. 25, 1981 Dec. 23, 1982
98th Jan. 3, 1983 Oct. 12, 1984
99th Jan. 3, 1985 Oct. 18, 1986
100th Jan. 6, 1987 Oct. 22, 1988
