DAYS360 function

Returns the number of days between two dates based on a 360-day year (twelve 30-day months), which is used in some accounting calculations. Use this function to help compute payments if your accounting system is based on twelve 30-day months.

Syntax

DAYS36 0(start_date,end_date,method)

Start_date and end_date     are the two dates between which you want to know the number of days. If start_date occurs after end_date, DAYS360 returns a negative number.

Method     is a logical value that specifies whether to use the U.S. or European method in the calculation.

Method

Defined

FALSE or omitted

U.S. (NASD) method. If the starting date is the 31st of a month, it becomes equal to the 30th of the same month. If the ending date is the 31st of a month and the starting date is earlier than the 30th of a month, the ending date becomes equal to the 1st of the next month; otherwise the ending date becomes equal to the 30th of the same month.

TRUE

European method. Starting dates and ending dates that occur on the 31st of a month become equal to the 30th of the same month.


Remark

Dates are stored as sequential serial numbers so they can be used in calculations. By default, December 31, 1899 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900.

Example

Col1

Col2

Formula

Description (Result)

1/30/2008

2/1/2008

=DAYS360([Col1],[Col2])

Number of days between the two dates, based on a 360-day year (1)

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