DAY

DAY(serial_number)

Returns the day as an integer given a date serial number.

serial_number

The date that contains the day you want to find.

REMARKS

* This function returns a number between 1 and 31.
* The "serial_number" can be a date, value, cell reference or a text string in a date format.
* If "serial_number" < 0, then #NUM! is returned.
* If "serial_number" is not numeric, then #VALUE! is returned.
* The date format can be any of those found on the "Format Cells" dialog box.
* If you want to enter a static date that will not change or update, use the shortcut key (Ctrl + ;).
* You can use the DATEVALUE function to return the date serial number given a date in text format.
* You can use the DATE function to return the date serial number given a year, month, day.
* You can use the DAYS360 function to return the number of days between two dates, based on 30 day months.
* You can use the DAYS function to return the number of days between two dates.
* You can use the MONTH function to return the month as an integer given a date serial number.
* You can use the NOW function to return the serial number of the current system date and time.
* You can use the TIME function to return the time as a decimal given the HOUR, MINUTE, SECOND.
* You can use the TODAY function to return the serial number of the current system date.
* You can use the YEAR function to return the year as an integer given a date serial number.
* For the Microsoft documentation refer to support.microsoft.com
* For the Google documentation refer to support.google.com

	A	B
1	=TODAY() = Monday, April 01, 2024	01 July 2023
2	=NOW() = Monday, April 01, 2024, 19:44	=NOW() = 01/04/2024
3	=DAY(B1) = 1	=NOW() = 45384
4	=DAY("01 July 2023") = 1
5	=DAY(B2) = 1
6	=DAY(38093) = 16
7	=DAY(DATE(2023, 7, 1)) = 1
8	=DAY(0) = 0
9	=DAY(-10) = #NUM!
10	=DAY("some text") = #VALUE!

1 - What is the current system date. This cell has been formatted with the number format "dddd, mmmm dd, yyyy".
2 - What is the current system date and time. This cell has been formatted with the number format "dddd, mmmm dd, yyyy, hh:mm".
3 - What is the day component from the date displayed in cell "B1".
4 - What is the day component from the date "01 July 2023".
5 - What is the day component from the date displayed in cell "B2".
6 - What is the day component from the date serial number 38094.
7 - What is the day component from the date "1/7/2023"
8 - What is the day component from the date serial number 0.
9 - If the serial_number is less than zero, #NUM! is returned.
10 - If the serial_number is not numeric, then #VALUE! is returned.