A public holiday, national holiday, federal holiday, statutory holiday, or legal holiday is a holiday generally established by law and is usually a non-working day during the year. A civic holiday, also known as a civil or work holiday, is a day that is legally recognized and celebrated as a holiday in a particular sovereign state or jurisdictional subdivision of such, e.g., a state or a province. It is usually a day that the legislature, parliament, congress or sovereign has declared by statute, edict or decree as a non-working day when the official arms of government such as the court system are closed. In federal states there may also be different holidays for the constituent states or provinces, as in the United States where holidays that were established by the federal government are called federal holidays. Such days may or may not be counted in calculating the statute of limitations in legal actions and are usually days when non-custodial parents are given alternating visitation or access to their children from a prior marriage or relationship according to a parenting schedule. The term may also be used to distinguish between days that may be celebrated as secular holidays rather than religious holidays such as the celebration of New Year's Day on January 1 (Gregorian calendar) and January 14 (Julian Calendar) in certain eastern Orthodox Christian countries such as Russia. In the British Isles, the term bank holiday is used to refer to days established as public holidays in statute law. In England and Wales, Good Friday and Christmas Day are known as common law holidays, as they have been celebrated by custom since time immemorial. Bank holidays were introduced in the late 19th century to extend the labour rights citizens have on common law holidays to four additional days. The major social function of public holidays is the co-ordination of leisure time. This co-ordination has costs, such as congestion and overcrowding (in leisure facilities, on transport systems) and benefits (easier for people to arrange social occasions).