Resurrecting an old-ish thread, but it bears mentioning:
Centova Cast time zone UTC +2 doesn't include Helskinki. Helsinki (Finland) is UTC +2 but there is no Helsinki available.
The city names in each time zone are meant as examples, not an exhaustive list of every city in the world. The reason examples are provided is because some time zones have variations on daylight savings rules and so-on -- thus the reason why there are 7 different options for UTC+02:00, each with a couple of sample city names.
You simply need to choose the one that is the best match for where you live. I can't tell you which one that is, as I live in Canada, but given that these examples are provided by PHP (which sources them from a standard time zone database), I would assume they chose those particular city names as examples because they'd be meaningful to the local population.
And UTC +2 time is 1 hour more than it really is. And the time is also 2mins more than it's real time.
That has nothing to do with Centova Cast; that would be a clock issue on the server itself.