Notes:
This holiday is designated as “Inauguration Day” in section 6103(c) of title 5 of the United States Code, which is the law that specifies holidays for Federal employees. Federal employees in the Washington, DC, area are entitled to a holiday on the day a President is inaugurated on January 20th for each fourth year after 1965.
OPM.gov URL: https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/tabs/2025/