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  2. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    A countdown is a carefully devised set of procedures ending with launch of a rocket. Depending on the type of vehicle used, countdowns can start from 72 to 96 hours before launch time. There are two countdowns proceeding simultaneously: The T-minus clock, a schedule of planned activities prior to launch (T−0), and.

  3. Windows Clock - Wikipedia

    en.wikipedia.org/wiki/Windows_Clock

    Windows Clock. Windows Clock (known as Clock & Alarms on Pocket PC 2000, [3] Alarms on Windows 8.1, and, until July 2022, Alarms & Clock on Windows 10) is a time management app for Microsoft Windows, with five key features: alarms, world clocks, timers, a stopwatch, and focus sessions. The features are listed on a sidebar.

  4. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software. Stopwatches operate in the opposite direction, upwards from 00:00 ...

  5. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    Doomsday Clock. The Doomsday Clock is a symbol that represents the likelihood of a human-made global catastrophe, in the opinion of the members of the Bulletin of the Atomic Scientists. [1] Maintained since 1947, the Clock is a metaphor, not a prediction, for threats to humanity from unchecked scientific and technological advances.

  6. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    A diagram of a countdown timer in the US style. Pedestrian countdown timers are becoming common at urban signal-controlled crossings. Where a pedestrian countdown is shown, it is normally used in conjunction with the flashing hand signal (in the US and Canada) or blackout period (UK), showing the amount of time remaining in seconds until the ...

  7. Ludwig's subathon - Wikipedia

    en.wikipedia.org/wiki/Ludwig's_subathon

    Ludwig's subathon. On March 14, 2021, American livestreamer Ludwig Ahgren began continuously livestreaming on Twitch. The livestream ended on April 13, 2021, after 31 days. A subathon is a type of livestream in which viewer donations add more time to a descending timer that counts down to the end of the stream. [1]

  8. Egg timer - Wikipedia

    en.wikipedia.org/wiki/Egg_timer

    An egg timer or kitchen timer is a device whose primary function is to assist in timing during cooking; the name comes from the first timers initially being used for the timing of cooking eggs. Early designs simply counted down for a specific period of time. Some modern designs can time more accurately by depending on water temperature rather ...

  9. Plastic Beach - Wikipedia

    en.wikipedia.org/wiki/Plastic_Beach

    Also on the website was a countdown timer, which on 23 February 2010 counted down to zero. After a significant delay, a new full Kong studios-esque interactive Plastic Beach "Beachsite" was uploaded onto the website, opening certain sections of Plastic Beach to be visited by guests.