Epoch
From Forensics Wiki
The phrase Epoch is commonly used to describe the time that is represented by the number "0."
The following Epochs are known:
| Applications | Date and Time | Reference |
| Unix File Systems | January 1, 1970 GMT | |
| Apple File Systems | January 1, 1904 GMT | http://developer.apple.com/technotes/tn/tn1150.html#HFSPlusDates |