=WEEKNUM( &quot; 01/01/1995 &quot; ; 2) returns 52. If the week starts on Monday, Sunday belongs to the last week of the previous year.
=WEEKNUM( &quot; 1995-01-01 &quot; ;2) 返回 52。因为设置每周的第一天为星期一，所以这个星期日属于上一年的最后一周。