Types of Date and Time Functions in Google Sheets
The date and time functions in Google Sheets can be grouped into different categories based on their purpose.
isoweeknum
ISOWEEKNUM Function – Google Sheets
The ISOWEEKNUM function accepts a date and returns the ISO week number (1 through 54) of that date. The date must be in a valid format, so you must use the DATE function, wrap it in quotes, or use a cell reference to a cell containing a date. An ISO week starts on Monday. The … Read more