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如何计算星期几
更新时间: 2021-05-26 15:01:13  

1、设今天是星期X(1≤X≤7),求再过Y天是星期几。答:星期(X+Y)/7的余数。

2、例如:今天星期一(X=1);

3、再过1天(Y=1,也就是明天)就是:(1+1)/7……2(星期二);

4、再过7天(Y=7,也就是过一星期)就是:(1+7)/7 = 8/7……1(星期一);

5、再过31天(Y=31,也就是下个月的今天)就是:(1+31)/7 = 32/7……4(星期四);

6、再过365天(Y=365,也就是明年的今天)就是:(1+356)/7 = 357/7……0(星期天)。

关键词: 如何 计算 星期

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