when did labor day become an official federal holiday
Labor Day Beginning in the late 19th century, as the trade union and labor movements grew, trade unionists proposed that a day be set aside to celebrate labor. "Labor Day" was promoted by the Central Labor Union and the Knights of Labor, which organized the first parade in New York City. In 1887, Oregon was the first state of the United States to make it an official public holiday. By the time it became an official federal holiday in 1894, thirty U.S. states officially celebrated Labor Day.[1]
Memorial Day The preferred name for the holiday gradually changed from "Decoration Day" to "Memorial Day," which was first used in 1882.[61] Memorial Day did not become the more common name until after World War II, and was not declared the official name by Federal law until 1967.[62] On June 28, 1968, Congress passed the Uniform Monday Holiday Act, which moved four holidays, including Memorial Day, from their traditional dates to a specified Monday in order to create a convenient three-day weekend.[63] The change moved Memorial Day from its traditional May 30 date to the last Monday in May. The law took effect at the federal level in 1971.[63] After some initial confusion and unwillingness to comply, all 50 states adopted Congress' change of date within a few years.