Filetimes

A trivial implementation of FILETIME style timestamps [1].

FILETIME was apparently introduced in the Windows NT operating system and is now used in a variety of file formats and equipment, including Simrad Echosounders.

A FILETIME is an "integer value stating the number of 100 nanosecond intervals since January 1, 1601".

julia> d = DateTime(1969, 10, 8)
1969-10-08T00:00:00

julia> filetime(d)
116371296000000000

julia> datetime(ans)
1969-10-08T00:00:00

julia> filetime()
131546381807780000

julia> datetime(ans)
2017-11-08T18:09:40.778

References

[1] FILETIME structure. MSDN documentation, http://bit.ly/2nYBBL2