Well, for reasons that no one really knows, blizzard eliminated the old easy way to find a server closer to home. Back in the day (at some point earlier that I can't remember), the server list showed what timezone it is based in, so it was really really easy to figure out what servers were where. They've since stopped doing that.
Now your options are either just create random characters on random servers and type /time until you find one that matches your timezone or (probably more practically) find a website that lists all the servers and where they are located. I'm pretty sure they exist, but I don't have one handy.
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