Prior to the 74th Congress (1935-1937), the first session of a Congress officially began on March 4 of odd-numbered years and ended at midnight on March 3 of odd-numbered years. Since 1935, in accordance with the 20th Amendment to the Constitution, Congresses have begun and ended at noon on January 3 of odd-numbered years. Each two-year Congress typically includes two legislative sessions, although third or special sessions were common in earlier years. Listed here are convening and adjournment dates for legislative sessions in each Congress.
| Congress | Session | Begin Date | Adjourn Date |
|---|---|---|---|
| 119 | 1 | Jan 3, 2025 | |
| 118 | 2 1 | Jan 3, 2024 Jan 3, 2023 | Jan 3, 2025 Jan 3, 2024 |
| 117 | 2 1 | Jan 3, 2022 Jan 3, 2021 | Jan 3, 2023 Jan 3, 20221 |
| 116 | 2 1 | Jan 3, 2020 Jan 3, 2019 | Jan 3, 2021 Jan 3, 2020 |
| 115 | 2 1 | Jan 3, 2018 Jan 3, 2017 | Jan 3, 2019 Jan 3, 2018 |
| 114 | 2 1 | Jan 4, 2016 Jan 6, 2015 | Jan 3, 2017 Dec 18, 2015 |
| 113 | 2 1 | Jan 3, 2014 Jan 3, 2013 | Dec 16, 20142
Jan 3, 2014 |
| 112 | 2 1 | Jan 3, 2012 Jan 5, 2011 | Jan 3, 20133
Jan 3, 2012 |
| 111 | 2 1 | Jan 5, 2010 Jan 6, 2009 | Dec 22, 2010 Dec 24, 20094 |
| 110 | 2 1 | Jan 3, 2008 Jan 4, 2007 | Jan 3, 20096
Dec 31, 20075 |
| 109 | 2 1 | Jan 3, 2006 Jan 4, 2005 | Dec 9, 20067
Dec 22, 2005 |
| 108 | 2 1 | Jan 20, 2004 Jan 7, 2003 | Dec 8, 2004 Dec 9, 2003 |
| 107 | 2 1 | Jan 23, 2002 Jan 3, 2001 | Nov 22, 2002 Dec 20, 2001 |
| 106 | 2 1 | Jan 24, 2000 Jan 6, 1999 | Dec 15, 2000 Nov 22, 19998 |
| 105 | 2 1 | Jan 27, 1998 Jan 7, 1997 | Dec 19, 19989
Nov 13, 1997 |
| 104 | 2 1 | Jan 3, 1996 Jan 4, 1995 | Oct 4, 199610
Jan 3, 1996 |
| 103 | 2 1 | Jan 25, 1994 Jan 5, 1993 | Dec 1, 1994 Nov 26, 1993 |
| 102 | 2 1 | Jan 3, 1992 Jan 3, 1991 | Oct 9, 1992 Jan 3, 1992 |
| 101 | 2 1 | Jan 23, 1990 Jan 3, 1989 | Oct 28, 199011
Nov 22, 1989 |
| 100 | 2 1 | Jan 25, 1988 Jan 6, 1987 | Oct 22, 1988 Dec 22, 1987 |
| 99 | 2 1 | Jan 21, 1986 Jan 3, 1985 | Oct 18, 1986 Dec 20, 1985 |
| 98 | 2 1 | Jan 23, 1984 Jan 3, 1983 | Oct 12, 1984 Nov 18, 1983 |
| 97 | 2 1 | Jan 25, 1982 Jan 5, 1981 | Dec 23, 1982 Dec 16, 1981 |
| 96 | 2 1 | Jan 3, 1980 Jan 15, 1979 | Dec 16, 1980 Jan 3, 198012 |
| 95 | 2 1 | Jan 19, 1978 Jan 4, 1977 | Oct 15, 1978 Dec 15, 1977 |
| 94 | 2 1 | Jan 19, 1976 Jan 14, 1975 | Oct 1, 1976 Dec 19, 1975 |
| 93 | 2 1 | Jan 21, 1974 Jan 3, 1973 | Dec 20, 1974 Dec 22, 1973 |
| 92 | 2 1 | Jan 18, 1972 Jan 21, 1971 | Oct 18, 1972 Dec 17, 1971 |
| 91 | 2 1 | Jan 19, 1970 Jan 3, 1969 | Jan 2, 1971 Dec 23, 1969 |
| 90 | 2 1 | Jan 15, 1968 Jan 10, 1967 | Oct 14, 1968 Dec 15, 1967 |
| 89 | 2 1 | Jan 10, 1966 Jan 4, 1965 | Oct 22, 1966 Oct 23, 1965 |
| 88 | 2 1 | Jan 7, 1964 Jan 9, 1963 | Oct 3, 1964 Dec 30, 1963 |
| 87 | 2 1 | Jan 10, 1962 Jan 3, 1961 | Oct 13, 1962 Sep 27, 1961 |
| 86 | 2 1 | Jan 6, 1960 Jan 7, 1959 | Sep 1, 1960 Sep 15, 1959 |
| 85 | 2 1 | Jan 7, 1958 Jan 3, 1957 | Aug 24, 1958 Aug 30, 1957 |
| 84 | 2 1 | Jan 3, 1956 Jan 5, 1955 | Jul 27, 1956 Aug 2, 1955 |
| 83 | 2 1 | Jan 6, 1954 Jan 3, 1953 | Dec 2, 195413
Aug 3, 1953 |
| 82 | 2 1 | Jan 8, 1952 Jan 3, 1951 | Jul 7, 1952 Oct 20, 1951 |
| 81 | 2 1 | Jan 3, 1950 Jan 3, 1949 | Jan 2, 1951 Oct 19, 1949 |
| 80 | 2 1 | Jan 6, 1948 Jan 3, 1947 | Dec 31, 1948 Dec 19, 1947 |
| 79 | 2 1 | Jan 14, 1946 Jan 3, 1945 | Aug 2, 1946 Dec 21, 1945 |
| 78 | 2 1 | Jan 10, 1944 Jan 6, 1943 | Dec 19, 1944 Dec 21, 1943 |
| 77 | 2 1 | Jan 5, 1942 Jan 3, 1941 | Dec 16, 1942 Jan 2, 1942 |
| 76 | 3 2 1 | Jan 3, 1940 Sep 21, 1939 Jan 3, 1939 | Jan 3, 1941 Nov 3, 1939 Aug 5, 1939 |
| 75 | 3 2 1 | Jan 3, 1938 Nov 15, 1937 Jan 5, 1937 | Jun 16, 1938 Dec 21, 1937 Aug 21, 1937 |
| 74 | 2 1 | Jan 3, 1936 Jan 3, 1935 | Jun 20, 1936 Aug 26, 1935 |
| 73 | 2 1 S | Jan 3, 1934 Mar 9, 1933 Mar 4, 1933 | Jun 18, 1934 Jun 15, 1933 Mar 6, 1933 |
| 72 | 2 1 | Dec 5, 1932 Dec 7, 1931 | Mar 3, 1933 Jul 16, 1932 |
| 71 | 3 S 2 1 S | Dec 1, 1930 Jul 7, 1930 Dec 2, 1929 Apr 15, 1929 Mar 4, 1929 | Mar 3, 1931 Jul 21, 1930 Jul 3, 1930 Nov 22, 1929 Mar 5, 1929 |
| 70 | 2 1 | Dec 3, 1928 Dec 5, 1927 | Mar 3, 1929 May 29, 1928 |
| 69 | 2 1 S | Dec 6, 1926 Dec 7, 1925 Mar 4, 1925 | Mar 4, 1927 Jul 3, 1926 Mar 18, 1925 |
| 68 | 2 1 | Dec 1, 1924 Dec 3, 1923 | Mar 3, 1925 Jun 7, 1924 |
| 67 | 4 3 2 1 S | Dec 4, 1922 Nov 20, 1922 Dec 5, 1921 Apr 11, 1921 Mar 4, 1921 | Mar 3, 1923 Dec 4, 1922 Sep 22, 1922 Nov 23, 1921 Mar 15, 1921 |
| 66 | 3 2 1 | Dec 6, 1920 Dec 1, 1919 May 19, 1919 | Mar 3, 1921 Jun 5, 1920 Nov 19, 1919 |
| 65 | 3 2 1 S | Dec 2, 1918 Dec 3, 1917 Apr 2, 1917 Mar 5, 1917 | Mar 3, 1919 Nov 21, 1918 Oct 6, 1917 Mar 16, 1917 |
| 64 | 2 1 | Dec 4, 1916 Dec 6, 1915 | Mar 3, 1917 Sep 8, 1916 |
| 63 | 3 2 1 S | Dec 7, 1914 Dec 1, 1913 Apr 7, 1913 Mar 4, 1913 | Mar 3, 1915 Oct 24, 1914 Dec 1, 1913 Mar 17, 1913 |
| 62 | 3 2 1 | Dec 2, 1912 Dec 4, 1911 Apr 4, 1911 | Mar 3, 1913 Aug 26, 1912 Aug 22, 1911 |
| 61 | 3 2 1 S | Dec 5, 1910 Dec 6, 1909 Mar 15, 1909 Mar 4, 1909 | Mar 3, 1911 Jun 25, 1910 Aug 5, 1909 Mar 6, 1909 |
| 60 | 2 1 | Dec 7, 1908 Dec 2, 1907 | Mar 3, 1909 May 30, 1908 |
| 59 | 2 1 S | Dec 3, 1906 Dec 4, 1905 Mar 4, 1905 | Mar 3, 1907 Jun 30, 1906 Mar 18, 1905 |
| 58 | 3 2 1 S | Dec 5, 1904 Dec 7, 1903 Nov 9, 1903 Mar 5, 1903 | Mar 3, 1905 Apr 28, 1904 Dec 7, 1903 Mar 19, 1903 |
| 57 | 2 1 S | Dec 1, 1902 Dec 2, 1901 Mar 4, 1901 | Mar 3, 1903 Jul 1, 1902 Mar 9, 1901 |
| 56 | 2 1 | Dec 3, 1900 Dec 4, 1899 | Mar 3, 1901 Jun 7, 1900 |
| 55 | 3 2 1 S | Dec 5, 1898 Dec 6, 1897 Mar 15, 1897 Mar 4, 1897 | Mar 3, 1899 Jul 8, 1898 Jul 24, 1897 Mar 10, 1897 |
| 54 | 2 1 | Dec 7, 1896 Dec 2, 1895 | Mar 3, 1897 Jun 11, 1896 |
| 53 | 3 2 1 S | Dec 3, 1894 Dec 4, 1893 Aug 7, 1893 Mar 4, 1893 | Mar 3, 1895 Aug 28, 1894 Nov 3, 1893 Apr 15, 1893 |
| 52 | 2 1 | Dec 5, 1892 Dec 7, 1891 | Mar 3, 1893 Aug 5, 1892 |
| 51 | 2 1 S | Dec 1, 1890 Dec 2, 1889 Mar 4, 1889 | Mar 3, 1891 Oct 1, 1890 Apr 2, 1889 |
| 50 | 2 1 | Dec 3, 1888 Dec 5, 1887 | Mar 3, 1889 Oct 20, 1888 |
| 49 | 2 1 S | Dec 6, 1886 Dec 7, 1885 Mar 4, 1885 | Mar 3, 1887 Aug 5, 1886 Apr 2, 1885 |
| 48 | 2 1 | Dec 1, 1884 Dec 3, 1883 | Mar 3, 1885 Jul 7, 1884 |
| 47 | 2 1 S S | Dec 4, 1882 Dec 5, 1881 Oct 10, 1881 Mar 4, 1881 | Mar 3, 1883 Aug 8, 1882 Oct 29, 1881 May 20, 1881 |
| 46 | 3 2 1 | Dec 6, 1880 Dec 1, 1879 Mar 18, 1879 | Mar 3, 1881 Jun 16, 1880 Jul 1, 1879 |
| 45 | 3 2 1 S | Dec 2, 1878 Dec 3, 1877 Oct 15, 1877 Mar 5, 1877 | Mar 3, 1879 Jun 20, 1878 Dec 3, 1877 Mar 17, 1877 |
| 44 | 2 1 S | Dec 4, 1876 Dec 6, 1875 Mar 5, 1875 | Mar 3, 1877 Aug 15, 1876 Mar 24, 1875 |
| 43 | 2 1 S | Dec 7, 1874 Dec 1, 1873 Mar 4, 1873 | Mar 3, 1875 Jun 23, 1874 Mar 26, 1873 |
| 42 | 3 2 S 1 | Dec 2, 1872 Dec 4, 1871 May 10, 1871 Mar 4, 1871 | Mar 3, 1873 Jun 10, 1872 May 27, 1871 Apr 20, 1871 |
| 41 | 3 2 S 1 | Dec 5, 1870 Dec 6, 1869 Apr 12, 1869 Mar 4, 1869 | Mar 3, 1871 Jul 15, 1870 Apr 22, 1869 Apr 10, 1869 |
| 40 | 3 2 S 1 | Dec 7, 1868 Dec 2, 1867 Apr 1, 1867 Mar 4, 1867 | Mar 3, 1869 Nov 10, 1868 Apr 20, 1867 Dec 1, 1867 |
| 39 | 2 1 S | Dec 3, 1866 Dec 4, 1865 Mar 4, 1865 | Mar 3, 1867 Jul 28, 1866 Mar 11, 1865 |
| 38 | 2 1 S | Dec 5, 1864 Dec 7, 1863 Mar 4, 1863 | Mar 3, 1865 Jul 4, 1864 Mar 14, 1863 |
| 37 | 3 2 1 S | Dec 1, 1862 Dec 2, 1861 Jul 4, 1861 Mar 4, 1861 | Mar 3, 1863 Jul 17, 1862 Aug 6, 1861 Mar 28, 1861 |
| 36 | 2 S 1 S | Dec 3, 1860 Jun 26, 1860 Dec 5, 1859 Mar 4, 1859 | Mar 3, 1861 Jun 28, 1860 Jun 25, 1860 Mar 10, 1859 |
| 35 | 2 S 1 S | Dec 6, 1858 Jun 15, 1858 Dec 7, 1857 Mar 4, 1857 | Mar 3, 1859 Jun 16, 1858 Jun 14, 1858 Mar 14, 1857 |
| 34 | 3 2 1 | Dec 1, 1856 Aug 21, 1856 Dec 3, 1855 | Mar 3, 1857 Aug 30, 1856 Aug 18, 1856 |
| 33 | 2 1 S | Dec 4, 1854 Dec 5, 1853 Mar 4, 1853 | Mar 3, 1855 Aug 7, 1854 Apr 11, 1853 |
| 32 | 2 1 S | Dec 6, 1852 Dec 1, 1851 Mar 4, 1851 | Mar 3, 1853 Aug 31, 1852 Mar 13, 1851 |
| 31 | 2 1 S | Dec 2, 1850 Dec 3, 1849 Mar 5, 1849 | Mar 3, 1851 Sep 30, 1850 Mar 23, 1849 |
| 30 | 2 1 | Dec 4, 1848 Dec 6, 1847 | Mar 3, 1849 Aug 14, 1848 |
| 29 | 2 1 S | Dec 7, 1846 Dec 1, 1845 Mar 4, 1845 | Mar 3, 1847 Aug 10, 1846 Mar 20, 1845 |
| 28 | 2 1 | Dec 2, 1844 Dec 4, 1843 | Mar 3, 1845 Jun 17, 1844 |
| 27 | 3 2 1 S | Dec 5, 1842 Dec 6, 1841 May 31, 1841 Mar 4, 1841 | Mar 3, 1843 Aug 31, 1842 Sep 13, 1841 Mar 15, 1841 |
| 26 | 2 1 | Dec 7, 1840 Dec 2, 1839 | Mar 3, 1841 Jul 21, 1840 |
| 25 | 3 2 1 S | Dec 3, 1838 Dec 4, 1837 Sep 4, 1837 Mar 4, 1837 | Mar 3, 1839 Jul 9, 1838 Oct 16, 1837 Mar 10, 1837 |
| 24 | 2 1 | Dec 5, 1836 Dec 7, 1835 | Mar 3, 1837 Jul 4, 1836 |
| 23 | 2 1 | Dec 1, 1834 Dec 2, 1833 | Mar 3, 1835 Jun 30, 1834 |
| 22 | 2 1 | Dec 3, 1832 Dec 5, 1831 | Mar 2, 1833 Jul 16, 1832 |
| 21 | 2 1 S | Dec 6, 1830 Dec 7, 1829 Mar 4, 1829 | Mar 3, 1831 May 31, 1830 Mar 17, 1829 |
| 20 | 2 1 | Dec 1, 1828 Dec 3, 1827 | Mar 3, 1829 May 26, 1828 |
| 19 | 2 1 S | Dec 4, 1826 Dec 5, 1825 Mar 4, 1825 | Mar 3, 1827 May 22, 1826 Mar 9, 1825 |
| 18 | 2 1 | Dec 6, 1824 Dec 1, 1823 | Mar 3, 1825 May 27, 1824 |
| 17 | 2 1 | Dec 2, 1822 Dec 3, 1821 | Mar 3, 1823 May 8, 1822 |
| 16 | 2 1 | Nov 13, 1820 Dec 6, 1819 | Mar 3, 1821 May 15, 1820 |
| 15 | 2 1 S | Nov 16, 1818 Dec 1, 1817 Mar 4, 1817 | Mar 3, 1819 Apr 20, 1818 Mar 6, 1817 |
| 14 | 2 1 | Dec 2, 1816 Dec 4, 1815 | Mar 3, 1817 Apr 30, 1816 |
| 13 | 3 2 1 | Sep 19, 1814 Dec 6, 1813 May 24, 1813 | Mar 3, 1815 Apr 18, 1814 Aug 2, 1813 |
| 12 | 2 1 | Nov 2, 1812 Nov 4, 1811 | Mar 3, 1813 Jul 6, 1812 |
| 11 | 3 2 1 S | Dec 3, 1810 Nov 27, 1809 May 22, 1809 Mar 4, 1809 | Mar 3, 1811 May 1, 1810 Jun 28, 1809 Mar 7, 1809 |
| 10 | 2 1 | Nov 7, 1808 Oct 26, 1807 | Mar 3, 1809 Apr 25, 1808 |
| 9 | 2 1 | Dec 1, 1806 Dec 2, 1805 | Mar 3, 1807 Apr 21, 1806 |
| 8 | 2 1 | Nov 5, 1804 Oct 17, 1803 | Mar 3, 1805 Mar 27, 1804 |
| 7 | 2 1 S | Dec 6, 1802 Dec 7, 1801 Mar 4, 1801 | Mar 3, 1803 May 3, 1802 Mar 5, 1801 |
| 6 | 2 1 | Nov 17, 1800 Dec 2, 1799 | Mar 3, 1801 May 14, 1800 |
| 5 | 3 2 S 1 S | Dec 3, 1798 Nov 13, 1797 Jul 17, 1798 May 15, 1797 Mar 4, 1797 | Mar 3, 1799 Jul 16, 1798 Jul 19, 1798 Jul 10, 1797 Mar 4, 1797 |
| 4 | 2 1 S | Dec 5, 1796 Dec 7, 1795 Jun 8, 1795 | Mar 3, 1797 Jun 1, 1796 Jun 26, 1795 |
| 3 | 2 1 S | Nov 3, 1794 Dec 2, 1793 Mar 4, 1793 | Mar 3, 1795 Jun 9, 1794 Mar 4, 1793 |
| 2 | 2 1 S | Nov 5, 1792 Oct 24, 1791 Mar 4, 1791 | Mar 2, 1793 May 8, 1792 Mar 4, 1791 |
| 1 | 3 2 1 | Dec 6, 1790 Jan 4, 1790 Mar 4, 1789 | Mar 3, 1791 Aug 12, 1790 Sep 29, 1789 |
