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  2. Equinox - Wikipedia

    en.wikipedia.org/wiki/Equinox

    2023 20: 21:25: 21: 14:58: 23: 06:50: ... The Antikythera mechanism predicts the equinoxes and solstices. ... The dates of the equinoxes change progressively during ...

  3. Solstice - Wikipedia

    en.wikipedia.org/wiki/Solstice

    2023 20: 21:25: 21: 14:58: 23: 06:50 ... Unlike the equinox, the solstice time is not easy to determine. ... The dates of the solstice varies each year and may occur ...

  4. March equinox - Wikipedia

    en.wikipedia.org/wiki/March_equinox

    The March equinox is known as the vernal equinox (or spring equinox) in the Northern Hemisphere and as the autumnal equinox (or fall equinox) in the Southern Hemisphere. [8] [7] [10] On the Gregorian calendar at 0° longitude, the northward equinox can occur as early as 19 March (which happened most recently in 1796, and will happen next in ...

  5. When and what is the winter solstice? Things to know about ...

    www.aol.com/news/winter-solstice-things-know...

    The days are short and the nights are long. That can only mean one thing: The winter solstice is coming. The first day of winter for the northern hemisphere of Earth will begin on Dec. 21 at ...

  6. When does winter begin in 2023? What to know about the ... - AOL

    www.aol.com/does-winter-begin-2023-know...

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  7. December solstice - Wikipedia

    en.wikipedia.org/wiki/December_solstice

    The December-solstice solar year is the solar year based on the December solstice. It is thus the length of time between adjacent December solstices. The length of the December-solstice year has been relatively stable between 6000 BC and AD 2000, in the range of 49 minutes 30 seconds to 50 minutes in excess of 365 days 5 hours.

  8. Winter solstice: What to know about the shortest day and ...

    www.aol.com/winter-solstice-know-shortest-day...

    The winter solstice is Dec. 21, the shortest day of the year in the Northern Hemisphere. Night owls might look at the evening of Dec. 21 as the longest night of the year.

  9. September equinox - Wikipedia

    en.wikipedia.org/wiki/September_equinox

    The dates and times of the September equinoxes [8] ... 2023-09-23 06:50 2024-09-22: ... is the site of annual equinox and solstice sunrise observances. An ...