I need to calculate days between today and the 'Last day to offer' and have Excel return a 0
if today is the last day to offer or if the date has passed; otherwise it should return the number of days left to offer (taking into account weekends and holidays).
I currently have
=NETWORKDAYS(TODAY(),E20,Holiday)
as the formula to calculate the 'Days left to offer', but this (obviously) does not return a zero when appropriate.