The problem is: the arrangement of the calendar is a big cycle every 400 years, that is, the month,
2016-08-22
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The problem is: the arrangement of the calendar is a big cycle every 400 years, that is, the month, day and day of the week of this year are exactly the same as those of 400 years ago. The current astronomical calendar takes 365.2425 days per year according to the law of celestial movement. Thus, there are 365.2425 × 400 = 146097 days per 400 years. If we take 365 days as a year, we will lose 0.2425 × 400 = 97 days every 400 years. These 97 days need to be made up by setting up a leap year (366 days per year), so we need to set up 97 leap years every 400 years
问题
提出
日历
编排
每年
一个
周期
今年
星期
历法
根据
天体
运行
规律
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