Come on Brandon, where is the spirit of Scotty? you know if you say your going to take it down for 2 hr's you have to have it up in 90 minutes right? You're not going to tell us how long it's "really" going to take are you?
Actually I'm pretty sure GMT and UTC are supposed to be the same. Both ignore DST. During the summer, Brittan and Ireland move ahead one hour (BST/IST respectively): http://wwp.greenwichmeantime.com/daylight-saving-time/
This is my experience as well. NOW, the only thing we need to make sure of is that the ZEN/CRYPTIC points for items in the store needs to be adjusted down when they convert fully to ZEN. Otherwise we really will have our points worth less.