You can also put in the actual dates in the formula =NETWORKDAYS(C2,D2,{"1/1/2003","4/18/2003","5/26/2003","7/4/2003","9/1/2003","11/27/2003","11/28/2003","12/24/2003","12/25/2003","12/31/2003"}). Also, be aware that if your two dates that you want the difference between are the same date, then the formula as I have it here will return a 1. Ex. NETWORKDAYS will return a 1 when comparing 11/06/2003 to 11/06/2003 and a 2 if the dates are 11/06/2003 and 11/07/2003, etc. For the analysis I use this function for I want the same day to appear as 0, so I just put a -1 at the end of the formula.