DATE

Syntax:

DATE(year, month, day)

returns the date, expressed as a date-time serial number. year is an integer between 1583 and 9956 or between 0 and 99; month and day are integers.

If month and day are not within range for a valid date, the date will 'roll over', as shown below.

Example:

DATE(2021, 11, 9)

returns the date 9th November 2021 (as a date-time serial number).

DATE(2021, 12, 32)

returns 1st January 2022 - the date rolls over, as 32nd December 2021 is not valid.

DATE(2004, 3, 0)

returns 29th February 2004 - the date rolls over backwards, as 0th March 2004 is not valid. 2004 was a leap year.

DATE(2021 15, 8)

returns 8th March 2022 - the date rolls over, as there are only 12 months in a year