需要多少本日历，才能重复使用？

[视频作者] 正经的知识

[视频时长] 0:31

[视频类型] 科学科普

视频素材：https://brokensecrets.com/2010/01/28/there-are-only-14-possible-calendar-configurations/ https://www.quora.com/How-often-in-years-do-calendars-repeat-with-the-same-day-date-combinations Factourism