开发者_运维百科 1800年是平年。1800是一个世纪年，世纪年判断它是否为闰年需要除以400，如果能被400整除，则说明这一年是闰年，否则就是平年。阳历没有闰日，或者农历没有闰月的年份，叫作[详细]
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