地球绕太阳公转一周不是精确的每年365天5小时48分46秒,每年都有变化,变化还不小的, 以33年为单位进行闰年不一定更准确
https://www.quora.com/Does-the-length-of-the-year-on-Earth-change-over-time-or-has-it-always-been-roughly-365-25-days
地球绕太阳公转一周不是精确的每年365天5小时48分46秒,每年都有变化,变化还不小的, 以33年为单位进行闰年不一定更准确
https://www.quora.com/Does-the-length-of-the-year-on-Earth-change-over-time-or-has-it-always-been-roughly-365-25-days