The official birthplace of Memorial Day is Waterloo, New York. The village was credited with being the birthplace because it observed the day on May 5, 1866, and each year thereafter, and because it is likely that the friendship of General John Murray, a distinguished citizen of Waterloo, and General John A. Logan, who led the call for the day to be observed each year and helped spread the event nationwide, was a key factor in its growth.
Many of the states of the U.S. South refused to celebrate Decoration Day, due to lingering hostility towards the Union Army and also because there were very few veterans of the Union Army who lived in the South. A notable exception was Columbus, Mississippi, which on April 25, 1866 at its Decoration Day commemorated both the Union and Confederate casualties buried in its cemetery.
The alternative name of "Memorial Day" was first used in 1881, but did not become more common until after World War II, and was not declared the official name by Federal law until 1967 . On June 28, 1968, the United States Congress passed the Uniform Holidays Bill, which moved three holidays from their traditional dates to a specified Monday in order to create a convenient three-day weekend and for the first time recognized Columbus Day as a federal holiday. The holidays included Washington's Birthday (which evolved into Presidents' Day), Veterans Day, and Memorial Day. 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 . After some initial confusion and unwillingness to comply at the state level, all fifty states adopted the measure within a few years, although Veterans Day was eventually changed back to its traditional date. Ironically, most corporate businesses no longer close on Columbus Day or Veterans Day, and an increasing number are staying open on President's Day as well. Memorial Day, however, has endured as one holiday during which most businesses stay closed because it marks the beginning of the "summer vacation season," as does neighboring Canada's Victoria Day, which occurs on the prior Monday.