In cell C1 use the formula =INT(B1-A1) to get the days. Then you have to get the remaining hours, which is the formula =MOD(B1-A1,INT(B1-A1)) and represents the remaining time. So in cell D2 enter the formula =HOUR(MOD(B1-A1,INT(B1-A1))). In cell E2 enter the formula =MINUTE(MOD(B1-A1,INT(B1-A1))).
You can opt out of Medicare Part B and in some situations you should opt out. Most people are automatically enrolled in Medicare Part A and Part B when they turn age 65. And most receive Part B at no charge. Medicare Part B is optional and you may not need the coverage if you have a group health plan.
Sign up for a Medicare Advantage Plan and/or a Medicare Prescription Drug Plan. During the 7-month period that starts 3 months before the month you turn 65, includes the month you turn 65, and ends 3 months after the month you turn 65. Your coverage will begin the first day of the month after you ask to join a plan.