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ytliu0 avatar ytliu0 commented on August 18, 2024 1

这样的情况在古代的日历很常见,原因至少有二。

一: 6d19h54m 等年历网页列出的合朔时刻是用现代历表计算的结果,所用的时间是東经120度地方平时,古代历法计算合朔的方法与现代不同,而且是用当时天文观测站的地方视时(即地方真太阳时)。

二: 自唐《麟德历》起引入进朔法,如果合朔时刻在18点后,可以虚进一日。此法在唐、五代、两宋和元初都使用,自元《授时历》后癈除。

813年二月朔的情况很可能是进朔法的结果。

from chinesecalendar.

melon avatar melon commented on August 18, 2024

这样的情况在古代的日历很常见,原因至少有二。

一: 6d19h54m 等年历网页列出的合朔时刻是用现代历表计算的结果,所用的时间是東经120度地方平时,古代历法计算合朔的方法与现代不同,而且是用当时天文观测站的地方视时(即地方真太阳时)。

二: 自唐《麟德历》起引入进朔法,如果合朔时刻在18点后,可以虚进一日。此法在唐、五代、两宋和元初都使用,自元《授时历》后癈除。

813年二月朔的情况很可能是进朔法的结果。

原来如此,感谢解疑~

from chinesecalendar.

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