Section, acts May 21, 1937, ch. 236, 1, 50 Stat. 199; Pub. L. 86–426, § 2(a), Apr. 20, 1960, 74 Stat. 53; Pub. L. 104–186, title II, § 204(3), Aug. 20, 1996, 110 Stat. 1729, provided for payment of salaries of officers and employees of the House of Representatives for the month of December on the 20th day of that month.