Origin Time doesn't match

I’ve seen many times that in my projects the origin time doesn’t match with the TC timestap in the file at all.

F:E: TC in the file says 00:58:00:00, origin time in nuendo shows 01:56:00:00.
Sometimes I have exacly one hour difference, sometimes 50 minutes, but till now never had seconds or frames differences.

Do I have some kind of offset I dont know?

Thanx

Has anyone the same issue?