I was able to farm all my atma for 2 relics and then some (5/12) for later to make a third one a little faster (when I get another lv50 job). However there were ~ 4 of them that almost took a couple hours to get 1 to drop and some were kind of quick.. Before that I was lucky to get the one I did get first. Also to note the whole clock/server time theory is kind of out the window by the rate I was farming two sets. But I did spend ~ 8 hours fate farming for multiples, with Bull, Goat and Lion being a royal pain. Then I had to spend 4 more hours farming an extra pair of those three the next day