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  2. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    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] In January 2020, it was moved forward to 100 seconds (1 minute, 40 seconds) before midnight. [6]

  3. Countdown - Wikipedia

    en.wikipedia.org/wiki/Countdown

    Seven seconds after launch of STS-121, the countdown clock at LC-39 at the Kennedy Space Center seen counting up, rather than down. 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".

  4. Apollo 11 - Wikipedia

    en.wikipedia.org/wiki/Apollo_11

    The second stage engines then cut off and separated at about 9 minutes and 8 seconds, allowing the first ignition of the S-IVB engine a few seconds later. [ 8 ] Apollo 11 entered a near-circular Earth orbit at an altitude of 100.4 nautical miles (185.9 km) by 98.9 nautical miles (183.2 km), twelve minutes into its flight.

  5. Play clock - Wikipedia

    en.wikipedia.org/wiki/Play_clock

    A play clock, also called a delay-of-game timer, [1] is a countdown clock intended to speed up the pace of the game in gridiron football.The offensive team must put the ball in play by either snapping the ball during a scrimmage down or kicking the ball during a free kick down before the time expires, or else they will be assessed a 5-yard delay of game (American football) or time count ...

  6. Two-minute silence - Wikipedia

    en.wikipedia.org/wiki/Two-minute_silence

    Two-minute silence. In the United Kingdom and other countries within the Commonwealth, a two-minute silence is observed as part of Remembrance Day to remember those who died in conflict. Held each year at 11:00 am on 11 November, the silence coincides with the time in 1918 at which the First World War came to an end with the cessation of ...

  7. 2 Minutes to Midnight - Wikipedia

    en.wikipedia.org/wiki/2_Minutes_to_Midnight

    2 Minutes to Midnight. " 2 Minutes to Midnight " is a song by the English heavy metal band Iron Maiden, featured on their fifth studio album, Powerslave (1984). It was released as the band's tenth single, and first from the album on 6 August 1984. It rose to number 11 on the UK Singles Chart and number 25 on Billboard Top Album Tracks.

  8. Greenwich Time Signal - Wikipedia

    en.wikipedia.org/wiki/Greenwich_Time_Signal

    Greenwich Time Signal. Graph of the six pips. The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones (or "pips") broadcast at one-second intervals by many BBC Radio stations to mark the precise start of each hour. The pips were introduced in 1924, generated by the Royal Observatory, Greenwich, and from 1990 ...

  9. Running out the clock - Wikipedia

    en.wikipedia.org/wiki/Running_out_the_clock

    With two minutes to go (120 seconds), the offense can take three "knees", one each on 1st, 2nd, and 3rd down (using all 40 seconds from the play clock on each), and allow the game clock to expire before having to run a play for fourth down. A similar situation can be had by also achieving a first down inside the two-minute warning.