Returns the number of workdays between two dates.
NETWORKDAYS(startdate, enddate, hols_range)
returns the number of workdays between startdate and enddate (inclusive). Saturday and Sunday are assumed to be non-working days. hols_range (optional) is a range containing dates of other non-working days.
returns 2. 5Sep08 is a Friday and 8Sep08 is a Monday. The Friday and Monday are counted as working days; Saturday and Sunday are ignored.
NETWORKDAYS("2008-09-05", "2008-09-08", D1:D2)
where D1 contains 8 Sep 08 and D2 contains 25 Dec 08, returns 1. 5 Sep 08 is a Friday which is a working day; Saturday and Sunday are ignored; 8 Sep 08 is a Monday but is specified as a holiday (in cell D1).