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  2. Geochron - Wikipedia

    en.wikipedia.org/wiki/Geochron

    The Geochron was the first world clock to display day and night on a world map, showing the sinh "bell curve" of light and darkness. The Geochron employs an intricate analog clockwork mechanism for its display, that shows the month, date, day of the week, hours and minutes, the areas of the world currently experiencing day and night , and the ...

  3. Daylight - Wikipedia

    en.wikipedia.org/wiki/Daylight

    World map showing the areas of Earth receiving daylight around 13:00 UTC in April. Daylight is the combination of all direct and indirect sunlight during the daytime.This includes direct sunlight, diffuse sky radiation, and (often) both of these reflected by Earth and terrestrial objects, like landforms and buildings.

  4. Equinox - Wikipedia

    en.wikipedia.org/wiki/Equinox

    Systematically observing the sunrise, people discovered that it occurs between two extreme locations at the horizon and eventually noted the midpoint between the two. Later it was realized that this happens on a day when the duration of the day and the night are practically equal and the word "equinox" comes from Latin aequus, meaning "equal", and nox, meaning "night".

  5. Daylight saving time by country - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_by...

    Observed DST during World War II from 1942 to 1945 as a part of the Bengal Presidency of India. Also observed in 2009. Barbados: 1980: Observed DST from 1977 to 1980. Belarus: 2010: Observed DST in 1941–1944, 1981–2010. Belgium: Observed DST in 1916–1940, 1942–1946 and since 1977. Belize: 1983: Observed DST in 1973–1974 and 1982 ...

  6. Terminator (solar) - Wikipedia

    en.wikipedia.org/wiki/Terminator_(solar)

    The terminator passes through any point on Earth's surface twice a day, at sunrise and at sunset, apart from polar regions where this only occurs when the point is not experiencing midnight sun or polar night. The circle separates the portion of Earth experiencing daylight from that experiencing darkness (night).

  7. Polar night - Wikipedia

    en.wikipedia.org/wiki/Polar_night

    Polar night is a phenomenon that occurs in the northernmost and southernmost regions of Earth when the Sun remains below the horizon for more than 24 hours. This only occurs inside the polar circles. [1] The opposite phenomenon, polar day or midnight sun, occurs when the Sun remains above the horizon for more than 24 hours.

  8. AOL Mail

    mail.aol.com/?icid=aol.com-nav

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. File:DaylightSaving-World-Subdivisions.png - Wikipedia

    en.wikipedia.org/wiki/File:DaylightSaving-World...

    English: World map showing current and past daylight saving time usage. The Spring-forward/Fall-back adjustment is a common practice at high latitudes. The Spring-forward/Fall-back adjustment is a common practice at high latitudes.