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  2. Photoperiodism - Wikipedia

    en.wikipedia.org/wiki/Photoperiodism

    After that date, days grow shorter (i.e. nights grow longer) until 21 December (the winter solstice). This situation is reversed in the southern hemisphere (i.e., longest day is 21 December and shortest day is 21 June). [1] [2] Some long-day obligate plants are: Carnation (Dianthus) Henbane (Hyoscyamus) Oat (Avena) Some long-day facultative ...

  3. Winter solstice: The shortest day and longest night of the year

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

    Since the summer solstice back in June, the days have grown steadily shorter and the nights have grown steadily longer in the Northern Hemisphere. But that’s about to reverse itself. Winter ...

  4. Unequal hours - Wikipedia

    en.wikipedia.org/wiki/Unequal_hours

    They are unequal duration periods of time because days are longer and nights shorter in summer than in winter. Their use in everyday life was replaced in the late Middle Ages by the now common ones of equal duration. The first temporal hour of daylight begins at sunrise, the first of night at sunset.

  5. Winter solstice - Wikipedia

    en.wikipedia.org/wiki/Winter_solstice

    Iranian people celebrate the night of the Northern Hemisphere's winter solstice as, "Yalda night", which is known to be the "longest and darkest night of the year". Yalda night celebration, or as some call it "Shabe Chelleh" ("the 40th night"), is one of the oldest Iranian traditions that has been present in Persian culture from ancient times.

  6. What to know about the winter solstice, 2024's shortest day

    www.aol.com/news/know-winter-solstice-2024s...

    The farther north you are, the shorter the day will be, and in the Arctic Circle, the sun won't rise at all. ... the nights last longer. The longest night happens on the solstice because the ...

  7. Summer solstice: Everything you need to know about the ...

    www.aol.com/summer-solstice-everything-know...

    Do you yearn for long days and short nights? Then this could be the best day of the year for you and your fellow sunlight seekers. The summer solstice is Thursday, June 20. It’s the longest day ...

  8. What Is the Winter Solstice, Exactly? We’ve Got All the ...

    www.aol.com/lifestyle/winter-solstice-exactly-ve...

    An equinox is a day when daylight and night-time become equal, whereas a solstice is a day that is either the longest or shortest day of the year. ... Other than longer days and shorter nights ...

  9. Equinox - Wikipedia

    en.wikipedia.org/wiki/Equinox

    These effects make the day about 14 minutes longer than the night at the equator and longer still towards the poles. The real equality of day and night only happens in places far enough from the equator to have a seasonal difference in day length of at least 7 minutes, [30] actually occurring a few days towards the winter side of each equinox ...