ISOWeekNumber(date)

Category: Date and Time function

Description

This function returns the ISO week number which ranges from 1 to 53 from date.

Argument	Type	Description
date	Date or Number (date serial)	An expression that results in a date-time serial value. The date to derive the ISO week number from.

Return value type: Number.

The date argument can take any value or expression that evaluates to a date serial value. Examples include:

A date string: #2019-12-12
A date serial value: 43811 (the date serial for "2019-12-12")
A date value created using any of the Date/Time functions that returns a date serial value.

 isoweeknumber(#2018-06-06)  //Returns 23

 isoweeknumber(#2021-08-30)  //Returns 35