Search results

...simply conveniences for specific purposes.<ref>{{Cite web |title=Leap Week Calendars |url=https://www.hermetic.ch/cal_stud/palmen/lweek1.htm |access-date=2023-0 ...regorian month structure. The ISO week date system is an example of a leap week calendar that eliminates the month. ...

{{Short description|Insertion of a leap day, week, or month}} ...'' in timekeeping is the insertion of a [[leap day]], [[Leap week calendar|week]], or month into some [[calendar year]]s to make the calendar follow the se ...

...have leap years|url=https://www.dw.com/en/no-perfect-calendar-why-we-have-leap-years-and-why-the-earths-always-out-of-sync/a-19077064 |access-date=April 8 ...00 out of every 400 years are common years, with every fourth year being a leap year without exception. ...

| 13 || Pax (leap week) || 7 ...''Columbus'' occurs between November and December. The first day of every week, month and year would be Sunday. ...

...g it [[February 29|February 29th]]. There are 7 possible days to start a [[leap year]], making a 28-year sequence.<ref>{{cite book |url=https://books.googl ...nless a year is not a leap year due to Gregorian exceptions, a sequence of calendars is reused every 28 years.<ref>{{cite book |url=https://books.google.com/boo ...

[[File:2016 calendar.svg|thumb|2016 is a leap year starting on Friday]] A '''leap year starting on Friday''' is any year with 366 days (i.e. it includes 29 F ...

...e, this calendar would not be in line with either of the major alternative calendars and the differences would change every four years. ...rn to the older Julian calendar. An extra day was added to February in the leap year of 1712, thus giving the month a unique 30-day ([[February 30|30 Febru ...

...e [[Year|astronomical cycle]], it has 366 days in a [[leap year]]. With 97 leap years every 400 years, the Gregorian calendar year has an average length of ...ays, slightly shorter than the average length of the calendar year in most calendars. ...

A '''leap year starting on Thursday''' is any year with 366 days (i.e. it includes 29 ...13th in Hispanic and Greek culture|Tuesday the 13th]]: those three in this leap year occur three months (13 weeks) apart: [[January 13|in January]], [[Apri ...

...gorian calendar]], [[century leap year|years divisible by 400]] are always leap years starting on Saturday. The most recent such occurrence was [[2000]] an ...rts on [[Saturday]] has only one [[Friday the 13th]]: the only one in this leap year [[October 13|occurs in October]]. [[common year starting on Sunday|Com ...

A '''leap year starting on Tuesday''' is any year with 366 days (i.e. it includes 29 ...arts on [[Tuesday]] has only one [[Friday the 13th]]; the only one in this leap year [[June 13|occurs in June]]. [[Common year starting on Wednesday|Common ...

...], has symmetrical equal quarters in 82% of the years in its [[Symmetry454#Leap rule|293-year cycle]], and starts every month on Monday. ...tion (timekeeping)|intercalary days]] that are appended only to the end of leap years. ...

A '''leap year starting on Wednesday''' is any year with 366 days (i.e. it includes [ ...at starts on [[Wednesday]] has two [[Friday the 13th]]s: those two in this leap year [[March 13|occur in March]] and [[November 13|November]]. [[Common yea ...

A '''leap year starting on Sunday''' is any year with 366 days (i.e. it includes 29 F ...ap year with three occurrences of [[Friday the 13th]]: those three in this leap year occur three months (13 weeks) apart: [[January 13|in January]], [[Apri ...

...uary 29|29 February]]) that begins on [[Monday]], 1 January, and ends on [[Leap year starting on Tuesday|Tuesday]], 31 December. Its [[dominical letter]]s ...that starts on [[Monday]] has two [[Friday the 13th]]s: those two in this leap year [[September 13|occur in September]] and [[December 13|December]]. [[Co ...

...rt description|13-month calendar where every date is fixed to a day of the week}} ...ecember 31 Gregorian), sometimes called "Year Day", does not belong to any week and brings the total to 365 days. Each year coincides with the correspondin ...

A '''common year starting on Friday''' is any non-[[leap year]] (i.e. a year with 365 days) that begins on [[Friday]], 1 January, an ...mmon year [[August 13|occurs in August]]. [[Leap year starting on Thursday|Leap years starting on Thursday]] share this characteristic, but also have anoth ...

{{for|other calendars used by Muslims|Islamic calendar|Solar Hijri calendar}} ...ate into a Western calendar when no other information (like the day of the week) is available. Its [[calendar era]] is the [[Hijri year]]. An example is th ...

{{About|the calendar introduced by the Government of India in 1957|other calendars using the Śaka era|Shaka era}} ...he Gazette of India]]'', in news broadcasts by [[All India Radio]], and in calendars and official communications issued by the [[Government of India]].<ref name ...

{{Short description|Calendar designed to look up the day of the week for a given date}} ...eal one of seven lists of years (splitting leap years) for which the seven calendars below apply.]] ...