fill between two date according to working day and non working day , holidays

I don't know what "missed date" means but you already have the formula for calculating working days, excluding holidays.

Please see my attached file
in column F is the data is missed from column E , this data is working day for me it's consider not have any activity
but column E is working day which have activity
for this i want to know what the date not have activity and list it in column F
hope you are now understand what i mean