yogsloth: Registered Aug 2015, From USA, but no time zone in the USA is in August yet. It's a European account.
Just saying. Be careful.
Cyraxpt: While i'm not saying that he is or is not who we think it is, wouldn't the registration date be based on Poland time? I already noticed that the server refresh (or whatever you want to call it) is at 22h here (1h38 minutes ago) so i assume that even registrations is the same.
Yeah, talking of interactions with GOG.com: pretty much all dates, including the dates shown in your account's purchase log, are using one of the European timezones (probably Central European [Poland's timezone], but it could be GMT for all I know). Any time I've made a purchase in the evening (local time), my receipt e-mail has the next day's date as the date for when the transaction took place.
I don't think there are probably a lot of international sites that use each user's own local timezone for all the dates and such related to that user's interactions with and on the site. In fact, a lot of (non-shitty) forums even have a notice along the lines of "All times are GMT -6" or whatever.