Some time back we had missed backup sets being sent out. Turns out the timezone on the Linux OBS was wrong. This could be the case for any OS server. Below is the quick timezone fix for linux:
--identify tmizone location from /usr/share/zoneinfo
--copy this file to /etc/localtime (replacing the file there) - that's it
--example, #cp -f /usr/share/zoneinfo/Europe/Vienna /etc/localtime
Another way if you're lucky: #system-config-date
This will make your online backup software reporting more reliable--with the correct timezone.