WEEKNUM()

Week of year from Date or DateTime

Returns the week of the year as a Number (1 to 53) if date is recognized, or 0 if not.

Sample usage

WEEKNUM("1/1/2019") returns 1

WEEKNUM("12/31/2019") returns53

WEEKNUM(TODAY()) returns Today's week number.

Syntax

WEEKNUM(when)

• when - A Date or DateTime value.

Note

Some constant values, such as "MM/DD/YYYY", are evaluated as a Date value by AppSheet. Similarly, "000:00:00" is evaluated as a Duration value. This doesn't mean your spreadsheet data must use the same formats: the date and time formats in your spreadsheets are determined by the locale/language setting. Column will always be evaluated as the type of column. Additionally, you can convert data, both columns and string literals, to specific types using functions such as DATE(), TIME(), or DATETIME().

See Also

Date and time expressions

EOMONTH()

ISOWEEKNUM()

WEEKDAY()

WORKDAY()