Labor Day 2023 and Every US Federal Holiday

A holiday observed on a Monday or a Friday gives a three-day weekend. In 2023 there are 9:

• New Year's Day: Monday, January 2, 2023
• Martin Luther King Jr. Day: Monday, January 16, 2023
• Washington's Birthday (Presidents' Day): Monday, February 20, 2023
• Memorial Day: Monday, May 29, 2023
• Juneteenth: Monday, June 19, 2023
• Labor Day: Monday, September 4, 2023
• Columbus Day: Monday, October 9, 2023
• Veterans Day: Friday, November 10, 2023
• Christmas Day: Monday, December 25, 2023

Weekdays minus the federal holidays observed on them: 249 business days in 2023. The business days calculator counts any other range.

See the holidays in the grid on the 2023 calendar.

DateMath applies the rules of 5 U.S.C. 6103 to the year: fixed dates for New Year's Day, Juneteenth, Independence Day, Veterans Day and Christmas, and the nth Monday or Thursday of the month for the others, such as the last Monday in May for Memorial Day. A fixed-date holiday on a Saturday is observed on the Friday before and one on a Sunday on the Monday after, the rule the Office of Personnel Management applies to federal employees. These are the same dates the business days calculator skips.

• US federal holidays. DateMath skips the 11 annual holidays of 5 U.S.C. 6103 on the days they are observed for federal employees, as the US Office of Personnel Management (OPM) lists them: a Saturday holiday on the Friday before, a Sunday holiday on the Monday after. Source: 5 U.S.C. 6103, OPM federal holidays.
• The Gregorian calendar. DateMath treats every date as a Gregorian date, with its leap-year rule: a year divisible by 4 is a leap year, except century years not divisible by 400, so 2000 had a February 29 and 2100 will not. Source: Gregorian calendar.

DateMath's date math is tested against more than 100 cases worked out by hand. Every worked example and table on the site is computed with the same code the calculators run, so a page and its calculator can't disagree.