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  2. International Fixed Calendar - Wikipedia

    en.wikipedia.org/wiki/International_Fixed_Calendar

    The International Fixed Calendar (also known as the IFC, Cotsworth plan, the Cotsworth calendar and the Eastman plan) is a proposed calendar reform designed by Moses B. Cotsworth, first presented in 1902. [1] The International Fixed Calendar divides the year into 13 months of 28 days each. A type of perennial calendar, every date is fixed to ...

  3. Lunisolar calendar - Wikipedia

    en.wikipedia.org/wiki/Lunisolar_calendar

    Lunisolar calendar. A lunisolar calendar is a calendar in many cultures, incorporating lunar calendars and solar calendars. The date of lunisolar calendars therefore indicates both the Moon phase and the time of the solar year, that is the position of the Sun in the Earth's sky. If the sidereal year (such as in a sidereal solar calendar) is ...

  4. Hindu calendar - Wikipedia

    en.wikipedia.org/wiki/Hindu_calendar

    A page from the Hindu calendar 1871-72. The Hindu calendar, also called Panchanga ( Sanskrit: पञ्चाङ्ग ), is one of various lunisolar calendars that are traditionally used in the Indian subcontinent and Southeast Asia, with further regional variations for social and Hindu religious purposes. They adopt a similar underlying ...

  5. Lunar calendar - Wikipedia

    en.wikipedia.org/wiki/Lunar_calendar

    A lunar calendar is a calendar based on the monthly cycles of the Moon 's phases ( synodic months, lunations ), in contrast to solar calendars, whose annual cycles are based on the solar year. The most widely observed purely lunar calendar is the Islamic calendar. [a] A purely lunar calendar is distinguished from a lunisolar calendar, whose ...

  6. Perpetual calendar - Wikipedia

    en.wikipedia.org/wiki/Perpetual_calendar

    A perpetual calendar employs a table for finding which of fourteen yearly calendars to use. A table for the Gregorian calendar expresses its 400-year grand cycle: 303 common years and 97 leap years total to 146,097 days, or exactly 20,871 weeks. This cycle breaks down into one 100-year period with 25 leap years, making 36,525 days, or one day ...

  7. Leap year - Wikipedia

    en.wikipedia.org/wiki/Leap_year

    Leap year. A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) compared to a common year. The 366th day (or 13th month) is added to keep the calendar year synchronised with the astronomical year or seasonal year. [1]

  8. Hebrew calendar - Wikipedia

    en.wikipedia.org/wiki/Hebrew_calendar

    The Hebrew calendar is a lunisolar calendar, meaning that months are based on lunar months, but years are based on solar years. The calendar year features twelve lunar months of 29 or 30 days, with an additional lunar month ("leap month") added periodically to synchronize the twelve lunar cycles with the longer solar year.

  9. Explainer-Gaza death toll: how many Palestinians has Israel's ...

    www.aol.com/news/explainer-gaza-death-toll-many...

    In May the ministry updated its breakdown of the fatalities to be based only on the 24,686 bodies it said had been fully identified, and not on the more-than 10,000 bodies it said have not yet ...