# DAYS360 function

DAYS360 returns the difference between two dates based on the 360-day year that is used in interest calculations. The result is an integer.

## Syntax

DAYS360(`date_1`, `date_2`, `type`)

`date_1`is the start date.`date_2`is the end date.

If `date_2` is earlier than `date_1`,
the function returns a negative number.

The optional argument `type` determines
the type of difference calculation. If type = 0 or if the argument
is missing, the US method (NASD, National Association of Securities
Dealers) is used. If type <> 0, the European method is used.

## Example

`=DAYS360("1/1/2000",NOW())` returns
the number of interest days from 1 January 2000, until today.