In calculating the calendar, it is flat on a leap year and calculated the number of days is 30 days or 31 days of the issue.
在进行年历计算时，有平闰年计算问题和月天数是30天还是31天的问题。
In calculating the calendar, it is flat on a leap year and calculated the number of days is 30 days or 31 days of the issue.
在进行年历计算时，有平闰年计算问题和月天数是30天还是31天的问题。
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