1100年、1200年、1300年、1400年、1500 年为什么是闰年?这几年二月都是29天。
推荐回答(4个)
错误。
1200年是公历闰年,二月是29天。1100年、1300年、1400年、1500
年不是公历闰年,二月是28天。
闰年,年数可整除4。但在世纪之年,还必须整除400。1100年、1300年、1400年、1500
年不能整除400,是平年。
闰年,4年一闰,每400年废3闰。
真正的历法
闰年不是4年4年往前推的
而是按照整除4
且不能被100整除
或者能被400整除这个规则计算的
具体原因
根据我推测应该是这样的
一年是365.25636天
也就是365天6时9分10秒
这样
4年一闰的话
每年就会多出9分10秒
100年就是920分钟左右
约合15小时多
所以第100年就不闰
但是这样
每400年就会少24小时
所以第400年的闰年
仍然保留
是的
比如公元1000年就不是闰年
1582年之前,欧洲实行儒略历,能被4整除的都是闰年,所以1100,1200,1300,1400,1500都是闰年。1582年之後,实行格里历,整百年份必须能被400整除才是闰年。
因为天文历法计算错误。
答案:都是
1200年该闰的闰了
1100年、1300年、1400年、1500年不该闰的也闰了。
所以造成1582年10月4日的下一天,直接跳转到10月15日。
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