FILETIME
| Epoch | Confidence | Associated with |
|---|---|---|
| 1 January 1601 CE | Exact | Redmond, WA |
Overview
FILETIME is the timing method found on Windows filesystems. It is a simple count of number of 100-nanosecond intervals since midnight on January 1st, 1601.
Info
The particular date of 1 January 1601 was chosen because it is the start of a new 400-year Gregorian leap year cycle.
Accuracy
This calculation is a simple algorithm based on Unix time, and is thus exactly accurate. However, it doesn't actually count 100-nanosecond intervals, instead updating on the site's global 20ms update cycle.