Week

A week is a unit of time longer than a day and shorter than a month. In most modern calendars, including the Gregorian calendar, the week is a period of seven days, making it the longest conventionally used time unit that contains a fixed number of days. Although having no direct astronomical basis, it is widely used as a unit of time.

Related Topics:
Unit - Time - Day - Month - Gregorian calendar - Astronomical

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Weeks can be thought of as forming an independent continuous calendar running in parallel with various other calendars. However, some calendars have been designed so that a given date occurs on the same day of the week each year. This can be done by making the week dependent on the year, with some days each year that do not belong to any week: the proposed World calendar has 52 weeks and 1 or 2 extra days each year, while the French Revolutionary Calendar had 36 weeks of 10 days and 5 or 6 extra days. The year can also be made dependent on the week: the former Icelandic calendar had years of 52 or 53 weeks.

Related Topics:
Calendars - World calendar - French Revolutionary Calendar - Iceland

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:The article days of the week covers in detail the order and names of the days of the week.

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