FAT Date Component
The date in FAT takes two bytes which contain 3 embedded
integer numbers. The date component breaks down in the following manner:
- Day - bits 0 to 4 can have a value between 1 and 31
- Month - bits 5 to 8 can have a value between 1 and 12
- Year - bits 9 to 15 can have a value between 0 and 127.
The FAT epoch year of 1980 is added to this value to give the year.