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冬至

2024年12月21日17时21分



冬至日係北半球全年白晝最短，夜晚最長的一日

圭表：正午日影最長。

從冬至到下一個冬至的時間稱為一「歲」，而從農曆正月初一到下一年正月初一的時間稱為一「年」。

冬至，阴极之至，阳气始生，日南至，日短之至，日影长之至，故曰“冬至”。

【古人的新年】冬至是二十四节气中最早制订出的一个，早在上古时期，中国人就已经用土圭观测太阳，测定出了冬至。古人认为自冬至起，白昼一天比一天长，阳气开始回升，代表下一个循环开始，是大吉之日。

人们最初过冬至节是为了庆祝新的一年的到来。据记载，周秦时代冬十一月为正月，所以贺冬与拜岁相同，并没有分别，人们以冬至为岁首过新年。直到汉武帝采用夏历后，把正月和冬至分开，从此人们开始专门过“冬至节”是自汉代以后才有，盛于唐宋，相沿至今。

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Reference:

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