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The sun transit time, also referred to as sun-meridian transit time, is the time at which the sun passes over the observer's meridian line. Most often this time is used as local noon time and therefore will differ from longitude to longitude. For example, on April 29 the sun transit time in Boston, Massachusetts is 12:42 p.m., whereas the sun transit time for New York City, New York is 12:53 p.m. This is due to longitudinal distance between the two cities. For Australian Sun Transit Time Calculators, calculators can be found on this website. http://www.ga.gov.au/geodesy/astro/sunrise.jsp - US Naval Observatory Sun/Moon calculator: http://aa.usno.navy.mil/data/docs/RS_OneDay.php A range of searches are possible including: *Sunrise/Sunset *Civil Twilight *Nautical twilight *Astronomical Twilight *Sun Transit Time 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「Sun transit time」の詳細全文を読む スポンサード リンク
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