Syntax:
DAYS_360(start:Date, end:Date {, method:Logical})
This function returns the number of days between the given dates according to the desired 360-day calendar method.
A duration is calculated as an integral number of days between two dates A and B (where by convention A is earlier than B).
There are two methods commonly available which differ in the way that they handle the cases where the months are not 30 days long:
TRUE
)FALSE
or omitted)In both cases the difference between the possibly-adjusted dates is then computed by treating all intervening months as being 30 days long.
Credit:
http://en.wikipedia.org/wiki/360-day_calendar
Revisions:
This function was added in 2.00.