I've run the weapon one as much as I can, which isn't much since only one of the hours is during my waking hours. Eidolon fodder is enough from events, but I don't even get my SSRs to level 125 from the events, much less SRs to 85.
The first one is the earlier default Burst hour. Uh, does that help? Hum, 12 hours from dailies reset.
I don't know the other two, but they're after that one, I'm fairly sure.