Find the number of business day between 2 date in an excel sheet
<p>Some background: Have a list of incidents which were open on a certain day and closed on a certain date, this data is kept in an excel sheet.</p>

<p>My issue: I need to find the no of working days (ie count of days excluding sat and sun) in between the date given in the excel sheet.</p>

<p>My question: Is there an inbuild function in excel which checks the calender and gives this needed output.</p>