A paid day off for most Federal employees. Federal employees currently receive 11 paid holidays each year: 

• New Year's Day (January 1).
• Birthday of Martin Luther King, Jr. (Third Monday in January).
• Washington's Birthday (Third Monday in February).
• Memorial Day (Last Monday in May).
• Juneteenth National Independence Day (June 19)
• Independence Day (July 4).
• Labor Day (First Monday in September).
• Columbus Day (Second Monday in October).
• Veterans Day (November 11).
• Thanksgiving Day (Fourth Thursday in November).
• Christmas Day (December 25).

Also, Presidential Inauguration Day for Federal employees in the Washington, DC, area (January 20 following a Presidential election).

Reference: OPM Pay & Leave and 5 USC 6103