This may be a stupid question but I thought I'd ask it anyway. Because I think about it everytime I'm on vacation. It happened when I was in London and now I am in Atlanta. Friends have asked what I'm doing up at 4am. I say "It's 7 am." I know it's because my profile is set to Pacific Standard Time. And so my posts ( like this one ) show that I am posting three hours earlier right now. This post will show around 7:30 when it's actually 10:30 for me. So when I'm on vacation should I change the timezone on my profile? Or just keep it the same and dont worry about it. I know it doesnt matter that much I guess. ?