Suckafish of the Bastion, Empire has cleared 8 man Nightmare EC. I have loot screen shots of the first 3 bosses with their loot table but with no time stamp. However I have a time stamp for Kephess. Below is that info.
Kephess was killed at 4:00 AM UTC but it took us a while to get that screen. The first three kills were on Thursday. My time zone is US Eastern.
Toth & Zorn: http://i49.tinypic.com/264nf6h.jpg
Firebrand and Stormcaller: http://i48.tinypic.com/ofak8z.jpg
Colonel Vorgath: http://i50.tinypic.com/16ll9vs.jpg
Warload Kephess: http://i48.tinypic.com/2a0nvrq.jpg