Epoch
Epoch is a reference point from which time is measured. It typically describes the date and time that is represented by the number 0.
The following epochs are known:
| Applications | Date and Time | Reference |
|---|---|---|
| Microsoft Windows (FILETIME and SYSTEMTIME) | January 1, 1601 | File Times |
| Unix (or POSIX) | January 1, 1970 | |
| Apple HFS | January 1, 1904 | |
| FAT | January 1, 1980 | |
| Palm OS | January 1, 1904 |