## Excel Formula: Get Nth Day of Year by Given Date

In this article, it provides a formula which combines the DATE and YEAR functions to get the nth day of the year based on the given date in Excel, in other words, to get the serial number of a date in its year.

Generic formula:

 date-DATE(YEAR(date),1,0)

Syntaxt and Arguments

 Date: the date that used to find nth day of year.

Return Value

This formula returns a serial number.

How the formula work

In this case, B3 contains the date that you want to get the nth day of its year, please use below formula:

 =B3-DATE(YEAR(B3),1,0)

Press Enter key to get the result.

Explanation

YEAR function: the YAER function is used to get the year of the given date and display the result in a serial number format.

In above case, the formula YEAR(B3) returns 2021, which is the year of the given date.

DATE function: the DATE function gets the date displayed as mm/dd/yyyy format based on the given year, month and day. If the argument day is 0, then the formula returns to the last day of argument month-1.

Now the formula can be explained as below:

=B3-DATE(YEAR(B3),1,0)
=B3-DATE(2021,1,0)
=44350-44196
=154

Extension

To get the nth day of current date

Generic formula

 =TODAY()-DATE(YEAR(TODAY()),1,0)

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