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  2. History of calendars - Wikipedia

    en.wikipedia.org/wiki/History_of_calendars

    [clarification needed] [7] The site is found near the world's oldest known site of permanent aquaculture. A mesolithic arrangement of twelve pits and an arc found in Warren Field, Aberdeenshire, Scotland, dated to roughly 8,000 BC, has been described as a lunar calendar and was dubbed the "world's oldest known calendar" in 2013. [8]

  3. List of calendars - Wikipedia

    en.wikipedia.org/wiki/List_of_calendars

    This is a list of calendars.Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent ...

  4. Warren Field - Wikipedia

    en.wikipedia.org/wiki/Warren_Field

    Warren Field is the location of a mesolithic calendar monument built about 8,000 BCE. [1] It includes 12 pits believed to correlate with phases of the Moon and used as a lunisolar calendar. [2] It is considered to be the oldest lunisolar calendar yet found. [3] [4] [5] It is near Crathes Castle, in the Aberdeenshire region of Scotland, in the ...

  5. Scientists Found a 12,000-Year-Old Monument—Turns Out It May ...

    www.aol.com/lifestyle/scientists-found-12-000...

    The calendar’s preoccupation with day, night, and seasonal changes may have sparked anew with a world-changing comet strike, one that experts believed occurred in roughly 10,850 B.C. and helped ...

  6. Bulgar calendar - Wikipedia

    en.wikipedia.org/wiki/Bulgar_calendar

    The Bulgar calendar was a solar calendar system used by the Bulgars, originally from Central Asia, who from the 4th century onwards dwelt in the Eurasian steppes north of the Caucasus and around the banks of river Volga. In 681, part of the Bulgars settled in the Balkan peninsula and established First Bulgarian Empire.

  7. Ancient Greek calendars - Wikipedia

    en.wikipedia.org/wiki/Ancient_Greek_calendars

    Various ancient Greek calendars began in most states of ancient Greece between autumn and winter except for the Attic calendar, which began in summer.. The Greeks, as early as the time of Homer, appear to have been familiar with the division of the year into the twelve lunar months but no intercalary month Embolimos or day is then mentioned, with twelve months of 354 days. [1]

  8. List of adoption dates of the Gregorian calendar by country

    en.wikipedia.org/wiki/List_of_adoption_dates_of...

    For explanation, see the article about the Gregorian calendar. Except where stated otherwise, the transition was a move by the civil authorities from the Julian to the Gregorian calendar. In religious sources it could be that the Julian calendar was used for a longer period of time, in particular by Protestant and Eastern Orthodox churches. The ...

  9. Solar calendar - Wikipedia

    en.wikipedia.org/wiki/Solar_calendar

    The Islamic calendar is a purely lunar calendar and has a year, whose start drifts through the seasons and so is not a solar calendar. The Maya Tzolkin calendar, which follows a 260-day cycle, has no year, therefore it is not a solar calendar. Also, any calendar synchronized only to the synodic period of Venus would not be solar.