Columbus Day is a legal federal public holiday of the United States, and it has no acronym. The Government Portal (USAGov) of the General Services Administration publishes it. The Office of Personnel Management applies its statutory basis to federal employees.
It marks the landing of Christopher Columbus in the New World on October 12, 1492. It began as a national observance in 1937 and moved to the second Monday in October in 1971. The fixed date was October 12. Then Public Law 90-363 of June 28, 1968 moved it, following the joint resolution of April 30, 1934.
It is not an economic indicator or statistical survey, so it has no level, no diffusion value, no sample, no weights and no seasonal adjustment. It applies under Section 6103 of Title 5 to federal employees and offices, and it is one of 12 federal holidays. It extends to banks, post offices and bond markets, while states, localities and private businesses vary and none must close.