This discrepancy occurs because dynamic disks contain entries in the partition table for the system volume or boot volume (if present on the disk). Dynamic disks also contain a partition that occupies the remainder of the disk and reserves space for use by dynamic volumes.
Jeremy Jordan was born on the 20th of February 1978, which was a Monday. Jeremy Jordan will be turning 40 in only 348 days from today. Jeremy Jordan is 39 years old. To be more precise (and nerdy), the current age as of right now is 14252 days or (even more geeky) 342048 hours. That's a lot of hours!
On the surface that isn't much of a line but remember that he played no baseball before the spring on 1994 and tried to make the transition at age 31. That tells me Jordan was a superb alla round athlete who could have been a very good major league player had he started at 18 years old.