As my question obviously didn't interest any expert, I took
advantage of my lunch break to do some more research ;)
Maybe I'm wrong, but to my knowledge, there is no function to get
the number of hectonanoseconds since January 1, 1970.
Fortunately I can get the number of seconds since the same date,
and the number of remaining hectonanoseconds, and then use them
in conjunction to create a new "SysTime".
With that I've got everything needed to fix my problem, and as I
can store those values as two independent "uint", it's easy to
compress them in the snapshot file, so no regrets :)
