How to get week number from date

In the following example, as you can see in the below photo, we get the week number identified by the WEEKNUM function.

=WEEKNUM(9/18/2022,1) ----->>>>answer is  39
=WEEKNUM(10/19/2022,2) ----->>>>answer is 43
=WEEKNUM(11/20/2022,1) ----->>>>answer is  48
=WEEKNUM(12/21/2022,2) ----->>>>answer is  52
=WEEKNUM(8/22/2022,1) ----->>>>answer is  35

WEEKNUM function

The WEEKNUM function is one of the Date & Time functions of Excel.

It Returns the week number in the year.

WEEKNUM Arguments 

This function has 2 Arguments:

1. Serial number is the date-time code used by Microsoft Excel for date and time calculation.
2. Return_type is a number (1 or 2) that determines the type of return value.

• Serial number argument of WEEKNUM function is number.
• The Return_type argument of WEEKNUM function is a number.
• The Serial number argument of WEEKNUM function is required and not optional.
• The Return_type argument of WEEKNUM function is not required and is optional.