The previous arrangement on both NA data centers was that Sunday, 6-9PM EST, was "24 Man Raid Time" under the assumption that if everyone made that their plan to do the raids, then there would be more people queuing, and therefore the queues would be shorter. This worked well throughout all of 2.0 and 3.0. Queue times went from the painful hours during the week to a nice zippy 5-10 minutes even for DPS on Sunday because of this arrangement.

Even now that it's old content, it's still the time of the week when the NA data centers run the 24 man raids for the glim glams. So I'd suggest trying Sunday afternoon/evening and seeing if it's any better.