Guild Wars 2

Is there a way to find which servers are more active at nighttimes (12:25am here) because a lot of zones are dead because of people sleeping. Is there a way to tell how many people are on a given server at a moment so I can guest somewhere more populated?

12:25am where?
If you’re in North America, you’ll find large nighttime populations on Sea of Sorrows server, as well as Tarnished Coast often times, and Blackgate and Dragonbrand will also be active during NA late nights. If you’re Oceanic/Asia based, plenty of servers will be active during your nighttime hours, however since you’re Guesting Tarnished Coast specifically is known as a very active PvE server.

If you are based in the EU and on an EU server, I actually have no idea where you would want to Guest to.