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  2. Swatch Internet Time - Wikipedia

    en.wikipedia.org/wiki/Swatch_Internet_Time

    Swatch Internet Time (or .beat time) is a decimal time system introduced in 1998 by the Swatch corporation as part of the marketing campaign for their line of ".beat" watches. Those without a watch could use the Internet to view the current time on the watchmaker's website, but now a dedicated wiki serves the purpose. [ 1 ]

  3. Clock position - Wikipedia

    en.wikipedia.org/wiki/Clock_position

    Neglecting the length of the vessel, and presuming that he is at the bow, he observes the time number lying on the line of sight. [1] For example, 12 o'clock means directly ahead, 3 o'clock means directly to the right, 6 o'clock means directly behind, and 9 o'clock means directly to the left. The clock system is not confined to transportation.

  4. Astronomical clock - Wikipedia

    en.wikipedia.org/wiki/Astronomical_clock

    A domestic clock housed in a wooden case, it gives indications including the solar, mean and sidereal time around the world, the positions of the constellations and planets, and the appearance of Halley's Comet. [17] Sint-Truiden. The astronomical clock constructed by Kamiel Festraets between 1937 and 1942 is now housed in the Festraets Museum.

  5. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    Sunrise, sunset, or sun position for any location – U.S. only; Sunrise, sunset and day length for any location – Worldwide; Rise/Set/Transit/Twilight Data – U.S. only; Astronomical Information Center; Converting Between Julian Dates and Gregorian Calendar Dates; Approximate Solar Coordinates; Algorithms for Computing Astronomical Phenomena

  6. Clear Sky Chart - Wikipedia

    en.wikipedia.org/wiki/Clear_Sky_Chart

    Clear Sky Alarm Clock free email notification service; Weather forecast for astronomy from Environment Canada Archived 2019-12-23 at the Wayback Machine; The Canadian Meteorological Centre; The Clear Sky Clock widget for MacOS (10.4 or greater) Download the Windows Vista Sidebar Gadget; myCSC iPhone/iPad/iPod Touch App; iCSC: Clear Sky Chart ...

  7. World clock - Wikipedia

    en.wikipedia.org/wiki/World_clock

    A world clock is a clock which displays the time for various cities around the world. The display can take various forms: The display can take various forms: The clock face can incorporate multiple round analogue clocks with moving hands or multiple digital clocks with numeric readouts, with each clock being labelled with the name of a major ...

  8. Civil time - Wikipedia

    en.wikipedia.org/wiki/Civil_time

    In modern usage, GMT is no longer a formal standard reference time: it is now a name for the time zone UTC+00:00. Universal Time is now determined by reference to distant celestial objects: UTC is derived from International Atomic Time (TAI), and is adjusted by leap seconds to compensate for variations in the rotational velocity of the Earth. [3]

  9. Tide clock - Wikipedia

    en.wikipedia.org/wiki/Tide_clock

    The right hand side of the clock is marked "hours until low tide" and has a count-down of hours from 5 to 1. The number pointed to by the hand gives the time "until" the (lunar) low tide. Some tide clocks incorporate time (using standard quartz movement) and even humidity and temperature in the same instrument.