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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. Stopwatch - Wikipedia

    en.wikipedia.org/wiki/Stopwatch

    A press of the second button then resets the stopwatch to zero. The second button is also used to record split times or lap times. When the split time button is pressed while the watch is running it allows the elapsed time to that point to be read, but the watch mechanism continues running to record total elapsed time. Pressing the split button ...

  4. Time for Timer - Wikipedia

    en.wikipedia.org/wiki/Time_for_Timer

    Time for Timer is a series of seven short public service announcements broadcast on Saturday mornings on the ABC television network starting in 1975. The animated spots feature Timer, a tiny cartoon character who is an anthropomorphic circadian rhythm , the self-proclaimed "keeper of body time."

  5. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    In the context of a rocket launch, the "L minus Time" is the physical time before launch, e.g. "L minus 3 minutes and 40 seconds". "T minus Time" is a system to mark points at which actions necessary for the launch are planned - this time stops and starts as various hold points are entered, and so doesn't show the actual time to launch.

  6. Shot clock - Wikipedia

    en.wikipedia.org/wiki/Shot_clock

    The NCAA introduced a 45-second shot clock for the 1985-86 season; [13] several conferences had experimented with it for the two seasons prior. [14] It was reduced to 35 seconds in the 1993–94 season, [15] and 30 seconds in the 2015–16 season. [16] The NAIA also reduced the shot clock to 30 seconds starting in 2015–16. [17]

  7. The 30-Minute Walking Workout Guaranteed To Make You ... - AOL

    www.aol.com/30-minute-walking-workout-guaranteed...

    For example, if your 2-minute interval at double digit incline starts to feel easy, push it to three minutes—or shorten the 1-minute interval at 3 to 5 percent incline to just 30 seconds.

  8. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    Unix time numbers are repeated in the second immediately following a positive leap second. The Unix time number 1 483 228 800 is thus ambiguous: it can refer either to start of the leap second (2016-12-31 23:59:60) or the end of it, one second later (2017-01-01 00:00:00). In the theoretical case when a negative leap second occurs, no ambiguity ...

  9. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    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, measuring elapsed time since a given time instant. Time switches are timers that control an electric switch.