Tinycloud: Pre-ordered Soma a few days ago, according to the remaining time on steam it's set to release on the 22nd of this month at 8PM in my time(GMT+2), but on GOG it's set to release on that day at 11PM? Why the difference?

I can't call 1 hour before 23 September a 22 September release, why is it released at a different time from steam?
I was hoping to actually play it on the day it's supposed to be released, but 11PM is way too late, it might as well say "Release date 23 September" in my case.

Now don't get me wrong, I'm not complaining, I can wait a day longer, I'm just wondering why it's different.

And will there be preloading for Soma? Would be awesome if someone from GOG could answer that. :')