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  2. Westminster Quarters - Wikipedia

    en.wikipedia.org/wiki/Westminster_Quarters

    First quarter, change 1. Half hour, changes 2 and 3. Third quarter, changes 4, 5 and 1 The full hour, changes 2, 3, 4 and 5 followed by one strike for each hour past 12 midnight or 12 noon struck on the Great Bell known as Big Ben in E 3. The number of changes used matches the number of quarter hours passed.

  3. Striking clock - Wikipedia

    en.wikipedia.org/wiki/Striking_clock

    There is there a wonderful clock, because there is a very large clapper which strikes a bell 24 times according to the 24 hours of the day and night, and thus at the first hour of the night gives one sound, at the second two strokes, and so distinguishes one hour from another, which is of greatest use to men of every degree.

  4. Repeater (horology) - Wikipedia

    en.wikipedia.org/wiki/Repeater_(horology)

    The half-quarter repeater can sound the time to half a quarter hour, or 7 + 1 ⁄ 2 minutes. It strikes hours and then quarter hours, like the quarter repeater, then it uses a single tone in order to signal if more than half of the current quarter hour has passed.

  5. Clock won't stop after most first downs in college football ...

    www.aol.com/sports/clock-wont-stop-most-first...

    The clock has stopped after all first downs in college football games for over 50 years. (AP Photo/John Raoux) (ASSOCIATED PRESS)

  6. Clock management - Wikipedia

    en.wikipedia.org/wiki/Clock_management

    In college football & Texas high school football, the clock restarts upon the snap of the ball when the clock was stopped with less than 2:00 left in either half. The NFL rule is the same as in the college game for the first half of games, but the clock restarts upon the snap when there is under 5:00 left in the 4th quarter/overtime. In high ...

  7. Play clock - Wikipedia

    en.wikipedia.org/wiki/Play_clock

    A play clock, also called a delay-of-game timer, 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 violation ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Cuckoo clock - Wikipedia

    en.wikipedia.org/wiki/Cuckoo_clock

    The cuckoo bird is activated by the clock movement as the clock strikes by means of an arm that is triggered on the hour and half hour. [3] There are two kinds of movements: one-day (30-hour) and eight-day clockworks. Some have musical devices, and play a tune on a Swiss music box after striking the hours and half-hours. Usually the melody ...