The original Rules of Civil Procedure for the District Courts were adopted by order of the Supreme Court on Dec. 20, 1937, transmitted to Congress by the Attorney General on Jan. 3, 1938, and became effective on Sept. 16, 1938.

The Rules have been amended Dec. 28, 1939, eff. Apr. 3, 1941; Dec. 27, 1946, eff. Mar. 19, 1948; Dec. 29, 1948, eff. Oct. 20, 1949; Apr. 30, 1951, eff. Aug. 1, 1951; Apr. 17, 1961, eff. July 19, 1961; Jan. 21, 1963, eff. July 1, 1963; Feb. 28, 1966, eff. July 1, 1966; Dec. 4, 1967, eff. July 1, 1968; Mar. 30, 1970, eff. July 1, 1970; Mar. 1, 1971, eff. July 1, 1971; Nov. 20, 1972, and Dec. 18, 1972, eff. July 1, 1975; Apr. 29, 1980, eff. Aug. 1, 1980; Oct. 21, 1980, Pub. L. 96–481, title II, § 205(a), (b), 94 Stat. 2330; Jan. 12, 1983, Pub. L. 97–462, §§ 2–4, 96 Stat. 2527–2530, eff. Feb. 26, 1983; Apr. 28, 1983, eff. Aug. 1, 1983; Apr. 29, 1985, eff. Aug. 1, 1985; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 25, 1988, eff. Aug. 1, 1988; Nov. 18, 1988, Pub. L. 100–690, title VII, §§ 7047(b), 7049, 7050, 102 Stat. 4401; Apr. 30, 1991, eff. Dec. 1, 1991; Dec. 9, 1991, Pub. L. 102–198, § 11, 105 Stat. 1626; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 27, 1995, eff. Dec. 1, 1995; Apr. 23, 1996, eff. Dec. 1, 1996; Apr. 11, 1997, eff. Dec. 1, 1997; Apr. 24, 1998, eff. Dec. 1, 1998; Apr. 26, 1999, eff. Dec. 1, 1999; Apr. 17, 2000, eff. Dec. 1, 2000; Apr. 23, 2001, eff. Dec. 1, 2001; Apr. 29, 2002, eff. Dec. 1, 2002; Mar. 27, 2003, eff. Dec. 1, 2003; Apr. 25, 2005, eff. Dec. 1, 2005; Apr. 12, 2006, eff. Dec. 1, 2006; Apr. 30, 2007, eff. Dec. 1, 2007; Apr. 23, 2008, eff. Dec. 1, 2008; Mar. 26, 2009, eff. Dec. 1, 2009; Apr. 28, 2010, eff. Dec. 1, 2010; Apr. 16, 2013, eff. Dec. 1, 2013; Apr. 25, 2014, eff. Dec. 1, 2014; Apr. 29, 2015, eff. Dec. 1, 2015; Apr. 28, 2016, eff. Dec. 1, 2016; Apr. 27, 2017, eff. Dec. 1, 2017; Apr. 26, 2018, eff. Dec. 1, 2018; Apr. 27, 2020, eff. Dec. 1, 2020; Apr. 11, 2022, eff. Dec. 1, 2022; Apr. 24, 2023, eff. Dec. 1, 2023; Apr. 2, 2024, eff. Dec. 1, 2024.