A holiday is a regularly reoccurring festive day. Usually, but not always, the festive day is observed every year. The word "holiday" is derived from the words "holy" and "day." In British English, the word "holiday" is used to refer to a Vacation as well as a public holiday.
Other holidays like America's Independence Day and Veterans' Day can come on a weekday or weekend. If the holiday is on a weekend, it is moved to Friday or Monday to create a "3-day weekend." Calendars sometimes mark these holidays twice. For example, in 2006, Veterans' Day in America was on Saturday, November 11. "Veteran's Day (observed)" was also on the calendar; it was Friday, November 10.