Date and Time - DAYS Function

Description

The DAYS function returns the number of days between two dates.

Syntax

DAYS (end_date, start_date)

Arguments

Argument Description Required/ Optional
End_date Start_date and End_date are the two dates between which you want to know the number of days. Required
Start_date Start_date and End_date are the two dates between which you want to know the number of days. Required

Notes

  • Excel stores dates as sequential serial numbers so that they can be used in calculations. By default, Jan 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39447 days after January 1, 1900

  • If both date arguments are numbers, DAYS uses EndDate–StartDate to calculate the number of days in between both dates.

  • If either one of the date arguments is text, that argument is treated as DATEVALUE (date_text) and returns an integer date instead of a time component.

  • If date arguments are numeric values that fall outside the range of valid dates, DAYS returns the #NUM! error value.

  • If date arguments are strings that cannot be parsed as valid dates, DAYS returns the #VALUE! error value.

Applicability

Excel 2013, Excel 2016

Example

DAYS Function
advanced_excel_date_time_functions.htm
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