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  2. Ship's bell - Wikipedia

    en.wikipedia.org/wiki/Ship's_bell

    Unlike civil clock bells, the strikes of a ship's bell do not accord to the number of the hour. Instead, there are eight bells, one for each half-hour of a four-hour watch. Instead, there are eight bells, one for each half-hour of a four-hour watch.

  3. Bell - Wikipedia

    en.wikipedia.org/wiki/Bell

    Bells in clock towers or bell towers can be heard over long distances, which was especially important in the time when clocks were too expensive for widespread ownership. In the case of clock towers and grandfather clocks, a particular sequence of tones may be played to distinguish between the hour, half-hour, quarter-hour, or other intervals.

  4. Liberty Bell - Wikipedia

    en.wikipedia.org/wiki/Liberty_Bell

    The Liberty Bell, previously called the State House Bell or Old State House Bell, is an iconic symbol of American independence located in Philadelphia. Originally placed in the steeple of Pennsylvania State House, now known as Independence Hall, the Liberty Bell today is located across the street from Independence Hall in the Liberty Bell Center in Independence National Historical Park.

  5. Watchkeeping - Wikipedia

    en.wikipedia.org/wiki/Watchkeeping

    Unlike civil clock bells, the strikes of a ship's bell do not accord to the number of the hour. Instead, there are eight bells, one for each half-hour of a four-hour watch. Bells would be struck every half-hour, and in a pattern of pairs for easier counting, with any odd bells at the end of the sequence.

  6. Civil time - Wikipedia

    en.wikipedia.org/wiki/Civil_time

    UTC is calculated by reference to atomic clocks and was adopted in 1972. [1] Older systems use telescope observations. In traditional astronomical usage, civil time was mean solar time reckoned from midnight. Before 1925, the astronomical time 00:00:00 meant noon, twelve hours after the civil time 00:00:00 which meant midnight.

  7. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The first clock known to strike regularly on the hour, a clock with a verge and foliot mechanism, is recorded in Milan in 1336. [96] By 1341, clocks driven by weights were familiar enough to be able to be adapted for grain mills, [97] and by 1344 the clock in London's Old St Paul's Cathedral had been replaced by one with an escapement. [98]

  8. Clock chime - Wikipedia

    en.wikipedia.org/wiki/Clock_chime

    Bells that play clock chimes are commonly placed in bell towers and elaborate floor clocks, but may be found any place where a large clock is installed. [ 1 ] The chime is distinct from the striking of the hour on a single bell, although a clock that plays a chime normally plays the associated hour strike as well, while the bell stuck on the ...

  9. Curfew bell - Wikipedia

    en.wikipedia.org/wiki/Curfew_bell

    St Peter's Church, Sandwich, where a curfew bell is still rung at 8 pm every evening.. The custom of ringing the curfew bell continued in many British towns and cities, especially in the north of England, well into the 19th century, although by then it had ceased to have any legal status. [12]