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Ancient Egyptian sundial (c. 1500 BC), from the Valley of the Kings, used for measuring work hour. Daytime divided into 12 parts. The ancient Egyptians were one of the first cultures to widely divide days into generally agreed-upon equal parts, using early timekeeping devices such as sundials, shadow clocks, and merkhets (plumb-lines used by early astronomers).
Similar methods of measuring time were used in medieval churches. [ citation needed ] The invention of the candle clock was attributed by the Anglo-Saxons to Alfred the Great , king of Wessex . The story of how the clock was created was narrated by Asser , who lived at Alfred's court and became his close associate. [ 2 ]
The time 8:45 may be spoken as "eight forty-five" or "(a) quarter to nine". [19] In older English, it was common for the number 25 to be expressed as "five-and-twenty". [20] In this way the time 8:35 may be phrased as "five-and-twenty to 9", [21] although this styling fell out of fashion in the later part of the 1900s and is now rarely used. [22]
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To determine "longitude by chronometer," a navigator requires a chronometer set to the local time at the Prime Meridian. Local time at the Prime Meridian has historically been called Greenwich Mean Time (GMT), but now, due to international sensitivities, has been renamed as Coordinated Universal Time (UTC), and is known colloquially as "zulu time".
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One’s biological age, which measures the body’s physiological state, may help predict who is at risk for developing colon polyps, a known risk factor for colorectal cancer.
Diǎn (点; 點), or point, marked when the bell time signal was rung. The time signal was released by the drum tower or local temples. [citation needed] Each diǎn or point is 1 ⁄ 60 of a day, making them 0.4 hours, or 24 minutes, long. Every sixth diǎn falls on the gēng, with the rest evenly dividing every gēng into 6 equal parts.