Your kneecap (patella) sits over the front of your knee joint. As you bend or straighten your knee, the underside of the patella glides over the bones that make up the knee. Strong tendons help attach the kneecap to the bones and muscles that surround the knee.
NETWORKDAYS.INTL(D3,E3,0000000) calculates whole days between the two dates (no weekends, no holidays). NETWORKDAYS(D3,E3,0000000,$A$16:$A$24) calculates whole working days days between the two dates (Sat/Sun weekends, holidays as per your list in $A$16:$A$24). Difference in non-working days between the two dates.
There are two things one is start date and end date between time duration that is considered for calculating the exact duration of time. There are few points which one should keep it mind while using time duration calculator: 1  i)Use either 24 hour format or 12 hour format.  ii)Use number 1-12 for the months of year e.g.