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  2. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    It has since been set backward 8 times and forward 17 times. The farthest time from midnight was 17 minutes in 1991, and the nearest is 90 seconds, set in January 2023. The Clock was moved to 150 seconds (2 minutes, 30 seconds) in 2017, then forward to 2 minutes to midnight in January 2018, and left unchanged in 2019. [5]

  3. Moment (unit) - Wikipedia

    en.wikipedia.org/wiki/Moment_(unit)

    A moment (momentum) is a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour, a twelfth of the period between sunrise and sunset. The length of a solar hour depended on the length of the day, which, in turn, varied with the season. [1] Although the length of a moment in modern seconds was therefore ...

  4. Shot clock - Wikipedia

    en.wikipedia.org/wiki/Shot_clock

    A shot clock in an NCAA basketball game, shown as the red LED digits above the basket. A shot clock is a countdown timer used in a variety of games and sports, indicating a set amount of time that a team may possess the object of play before attempting to score a goal. Shot clocks are used in several sports including basketball, water polo ...

  5. Doomsday clock moves to 90 seconds to midnight – the ... - AOL

    www.aol.com/doomsday-clock-moves-90-seconds...

    The Doomsday Clock has moved closer to midnight than it has ever been, and is now just 90 seconds away from striking 12, scientists have said. The clock, a symbolic timepiece showing how close the ...

  6. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    Countdown. A countdown is a sequence of backward counting to indicate the time remaining before an event is scheduled to occur. NASA commonly employs the terms "L-minus" and "T-minus" during the preparation for and anticipation of a rocket launch, [1] and even "E-minus" for events that involve spacecraft that are already in space, where the "T ...

  7. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    History of timekeeping devices. A marine sandglass. It is related to the hourglass, nowadays often used symbolically to represent the concept of time. The history of timekeeping devices dates back to when ancient civilizations first observed astronomical bodies as they moved across the sky. Devices and methods for keeping time have gradually ...

  8. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    The large dial shows the ten hours of the decimal day in Arabic numerals, while the small dial shows the two 12-hour periods of the standard 24-hour day in Roman numerals. Decimal time is the representation of the time of day using units which are decimally related. This term is often used specifically to refer to the French Republican calendar ...

  9. Perfection (board game) - Wikipedia

    en.wikipedia.org/wiki/Perfection_(board_game)

    Perfection is a game originally produced by the Pennsylvania company Reed Toys and then by the Milton Bradley company. The object is to put all the pieces into matching holes on the board (pushed down) before the time limit runs out. When time runs out, the board springs up, causing many, if not all, of the pieces to fly out.

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