通过excel公式计算月份的周数

Question

My week starts from Saturday to Friday and I need to count no of Weeks. Eg Week starting from 27th Oct 2018 to 2nd Nov 2018 should be counted as first week of month November but formula is calculating it as Week 5 of October month. Below is the formula I have been using.

=IF(K89="No Date","No Week",CONCAT("Week ",WEEKNUM(I89-1)-WEEKNUM(I89-DAY(I89)-6)))

where K89 is a date column.

Any suggestions, please.

Answer 1

As found elsewhere:

=INT((A2-LOOKUP(A2,DATE(YEAR(A2)-{2,1,0},2,27)-WEEKDAY(DATE(YEAR(A2)-{2,1,0},2,27-7))+7))/7)+1

You'll need to change the your desired start date (2,27 for february 27 in this example)