Weds quick lesson on how to understand timezones:
A day consist of 24 hours, and living on different parts of the globe means we'd have sunset, sunrise, day and midnight at different times of this day compared to someone that lives on the other side of the planet away from you.
To make things more convenient for certain world parts, countries(cities even) and being able to have mornings at 8am, afternoons at 3pm etc. We have individual clocks for different locations but they all go within the 24 hour time span. These are called TIMEZONES.
So I myself for example live in Sweden, and I have my 24 hours of the day like anyone else. But worldwide I have the timezone GMT+1 also known as UTC+1. While the East coast in the US would have either UTC-5 or EST/EDT(Their own timezone name). Which means that if you, as a user living in the EST/EDT zone would tell me to be online at 7pm without taking any consideration of what time I'd actually have, A swede or anyone living in the GMT+1/UTC+1 timezone would need to be online at 1am their time since there's a whole 6 hours apart from US and Sweden.
This is why we have something like UTC clock to make it easier for us(think it's called Universal Time Clock). The clock starts at 0 hours timezone change in the UK, and then it goes 12 hours ahead(UTC+) to the edge of the world map. But it also goes 12 hours back(UTC-).
So if I were to say to someone to meet me inside the game at 5pm UTC, we'd have to think which timezone we live in and if everyone think UTC it should be simple + to minus math. I myself would just need to +1 hour onto the clock, and then I'd have my current time which I see on all the clocks around me. Same thing works for anyone no matter where you live on the planet, as long as you follow the UTC clock and add on hours, or remove depending on which side of the globe you live, you will end up having YOUR time, and that way you'd know when to meet someone.
The only thing is that both of the users must know their timezones, something we should learn in school to be honest but we really don't. So it's up to you to get a hang of it yourself. Just take a look at the map, find out where you live, and count how many hours you are apart.
