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Google Sheets

To use WEEKNUM in Google Sheets, you first need to open up a new spreadsheet or select an existing spreadsheet. Next, enter the following formula into one of the cells in the spreadsheet: =WEEKNUM(serial_number)

In the formula, "serial_number" is the cell reference for the date that you want to calculate the week number for. After you've entered the formula, press "Enter" on your keyboard and the week number for the date will be displayed in the cell.

The syntax of WEEKNUM in Google Sheets is as follows:

=WEEKNUM(date)

This function takes a date as an input and returns the week number for that date.

The WEEKNUM function in Google Sheets returns the week number for a given date. The syntax for the function is WEEKNUM(date), where date is the date you want to find the week number for. An example of how to use WEEKNUM in Google Sheets is shown below.

In the example, the week number for January 1, 2019 is 1. The week number for January 2, 2019 is 2. The week number for January 3, 2019 is 3, and so on.

There are a few occasions when you should not use WEEKNUM in Google Sheets. One such instance is when you are working with a date that is in a different format than the standard American date format. In this case, you would need to use the DATE function to convert the date to the standard format, and then use the WEEKNUM function on the converted date. Another time you should not use WEEKNUM is when you are working with a list of dates that are not in consecutive order. In this case, you would need to use the ARRAYFORMULA function to create a list of consecutive numbers, and then use the WEEKNUM function on the list of numbers.

The WEEKNUM function in Google Sheets calculates the week number for a given date. The week number starts at 1 on the first Monday of the year and increases by 1 each week. There are a few other formulas that can be used to calculate the week number. The WEEKDAY function returns the day of the week for a given date. The DAY function returns the day of the month for a given date. The DATE function returns the date for a given day of the week and month. The formula below combines the WEEKDAY, DAY, and DATE functions to calculate the week number.

=WEEKDAY(DATE(year, month, day))+DAY(DATE(year, month, day))-1

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