If a date is given, it must be a valid Gregorian calendar date. In this case the optional time must be in the range 00:00 to 23:59:59.99999...
如果给定的是日期，则该日期必须为有效的公历日期。在这种情况下，可选的时间范围为 00:00 到 23:59:59.99999...