This calculates number of Saturdays in a period so add this to NETWORKDAYS:

=SUMPRODUCT(--(WEEKDAY(ROW(INDIRECT(A1&":"&B1)))=7))

A1=Start date
B1=End date

"Robert" wrote:

i am trying to calculate how many days between 2 dates that excludes
holidays, but includes saturdays. Networkdays is only for 5 day work
weeks...i need it to be for 6 day work weeks.