[Utmost]

Reminds me of my schedule for the past forever! Depends on what you want to raid. With nothing being instanced on p99 and all of the good targets being killed instantly you are at the whims of variance which gives most raid mobs a 16 hour window to spawn in every 7 days. There is an actual Plane of Sky rotation where you could find 1 day a week to be guaranteed at least a few hours of action on that night each week, and the other planes possibly on the other nights.