If you look at the homepage,
http://us.runesofmagic.com/us/ - it clearly states
Our servers will be taken offline between 0:30 am PDT and return approx. at 6:30 am PDT.
This is 9:30am Eastern. However, since it actually started a little late, it may run past the posted time.
It just came back on (1min after @Nykk's post) lol
I just want to take this time and say nothings perfect, even CEO's are late for work sometimes stuck in traffic. Some things can't be helped.