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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Roman timekeeping ： ウィキペディア英語版 Roman timekeeping The Roman clock, or time of day, was divided into 24 hours (Latin ''horae''), 12 hours of light and 12 hours of darkness.〔Encyclopedia of the Roman Empire - Page 543 Matthew Bunson - 2002 "The Roman day was divided into 12 hours of light and 12 hours of darkness. By the middle of the second century BCE, the Romans understood that the length of daylight varied throughout the year and also depended upon latitude.〕 ==Seasonal change in the length of hours in the day== Since the length of the sunlight varied with the seasons, this also meant that the length of the hour changed - with shorter hours in winter and longer hours in summer.〔The Romans: an introduction - Page 208 Antony Kamm - 2008 "The Roman day was divided into twelve hours of equal length, from sunrise to sunset, and likewise during the night. Thus the length of an hour, and the hour itself, varied according to the season of the year."〕 The Romans also understood that the length of daylight depended upon latitude. At the winter solstice, at mediterranean latitude, an hour was about 45 minutes, while at the summer solstice, an hour was about 75 minutes.〔The Gospel of John: Volume 1 - Page 98 William Barclay - 2001 "The Jewish day, like the Roman day, was divided into twelve equal hours, from sunrise to sunset. That of course means that the length of an hour varied according to the length of the day and the season of the year."〕〔Francis Willey Kelsey introduction to edition of Iulii Caesaris Commentarii rerum gestarum Julius Caesar, 1918 "reckoned about 5 o'clock by our time, we add 31/2 to 5, making 8.30 ; that is, 8.30 am, by our reckoning from midnight, will approximately represent the beginning of the fourth hour of the day by Roman reckoning under the conditions of "〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Roman timekeeping」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.