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  2. Lunar month - Wikipedia

    en.wikipedia.org/wiki/Lunar_month

    In ancient Egypt, the lunar month began on the day when the waning moon could no longer be seen just before sunrise. [1] Others run from full moon to full moon. Yet others use calculation, of varying degrees of sophistication, for example, the Hebrew calendar or the ecclesiastical lunar calendar. Calendars count integer days, so months may be ...

  3. Coligny calendar - Wikipedia

    en.wikipedia.org/wiki/Coligny_calendar

    A synodic month has 29.53 days, so the calendar overcomes any slight slippage or temporary imbalance by the month of MID EQVOS having either 29 or 30 days as required to keep the calendar in sync with the lunar phase. [b] The Coligny calendar is designed to keep perfectly in sync with the lunar phase, [c] with a tolerance of less than 24 hours ...

  4. Libration - Wikipedia

    en.wikipedia.org/wiki/Libration

    The lunar phases and librations in 2019 in the Northern Hemisphere at hourly intervals, with music, titles, and supplemental graphics Simulated views of the Moon over one month, demonstrating librations in latitude and longitude. Also visible are the different phases, and the variation in visual size caused by the variable distance from Earth.

  5. Lunar calendar - en.wikipedia.org

    en.wikipedia.org/.../page/mobile-html/Lunar_calendar

    A lunisolar calendar was found at Warren Field in Scotland and has been dated to c. 8000 BC, during the Mesolithic period. [2] [3] Some scholars argue for lunar calendars still earlier— Rappenglück in the marks on a c. 17,000 year-old cave painting at Lascaux and Marshack in the marks on a c. 27,000 year-old bone baton—but their findings remain controversial.

  6. Lunar calendar - Wikipedia

    en.wikipedia.org/wiki/Lunar_calendar

    A lunisolar calendar was found at Warren Field in Scotland and has been dated to c. 8000 BC, during the Mesolithic period. [2] [3] Some scholars argue for lunar calendars still earlier—Rappenglück in the marks on a c. 17,000 year-old cave painting at Lascaux and Marshack in the marks on a c. 27,000 year-old bone baton—but their findings remain controversial.

  7. Ecclesiastical full moon - Wikipedia

    en.wikipedia.org/wiki/Ecclesiastical_full_moon

    The ecclesiastical lunar calendar spans the year with lunar months of 30 and 29 days which are intended to approximate the observed phases of the Moon. Since a true synodic month has a length that can vary from about 29.27 to 29.83 days, the moment of astronomical opposition tends to be roughly 14.75 days after the previous conjunction of the ...

  8. Qumran calendrical texts - Wikipedia

    en.wikipedia.org/wiki/Qumran_calendrical_texts

    There are about twenty different texts from Qumran that deal with a lunar phase calendar. [1] They are mainly very fragmentary, so the calendar is not completely understood. However, it is significantly different from the Babylonian lunar calendar which evolved into the 354-day Hebrew calendar as known today. The scrolls calendar divided the ...

  9. Moonrise and moonset - Wikipedia

    en.wikipedia.org/wiki/Moonrise_and_moonset

    The exact times depend on the lunar phase and declination, as well as the observer's location. As viewed from outside the polar circles, the Moon, like all other celestial objects outside the circumpolar circle, rises from the eastern half of the horizon and sets into the western half [1] due to Earth's rotation. [2]