地方平時




地方平時是太陽時改變形式修正後，在指定的經度範圍內使用一致時間的地方太陽時，他的一致性僅取決於測量用的鐘錶準確性。


地方平時從19世紀初期開始逐漸被採用，這些地區都不再使用地方太陽時或日晷的時間，直到每個國家都以各種不同的形式將之定為標準時間。標準時間意味著相同的時間使用在一些區域中— 通常，不是從格林威治標準時間中抵銷就是選擇區域內主要區域的地方時間作為標準時間。地方平時和視太陽時之間的差別就是均時差 （equation of time）。



相關條目



  • 日

  • 時區






















































  • 查

  • 论

  • 编


时间

基本概念

历史 · 過去 · 現在 · 未来 · 永恆 · 时间箭头
Wooden hourglass 3.jpg
時間單位
取法自然：銀河年 · 默冬章 · 年 · 季 · 月 · 日
人為單位：秒 · 分 · 刻 · 时 · 周 · 旬 · 年代 · 世纪 · 千纪
中國古代曆法時間單位：元 · 紀 · 蔀 · 章 · 歲 · 月 · 旬 · 日 · 辰 · 更 · 點 · 刻
印度古代時間單位：大時 · 須臾 · 羅豫 · 腊缚 · 彈指 · 坦剎那 · 瞬頃 · 念 · 剎那 · 生滅
取自物理理論：普朗克時間
天文的年

交点年 · 回归年 · 恒星年 · 近点年 · 儒略年
天文的月

交點月 · 回歸月 · 恒星月 · 近點月 · 朔望月
天文的日

太阳日 · 恒星日 · 曆書日 · 儒略日 · 朔望日
天文的時

民用時 · 恆星時 · 曆書時
時間標準

原子时 · 協調世界時（UTC） · 格林尼治平时（GMT） · 地球時（TT） · 力學時（DT）
授時與守時
授時：原時 · 曆元 · 岁差 · 均時差 · 偕日升
守時：地方平時 · 时区 · 標準時間
其他

時鐘 · 分點 · 時間地理學 · 時間生物學 · 未来学 · 時空 · 時間旅行 · UNIX时间

参见:數量級 (時間) · 地質年代 · 年代學



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