I don't remember. I didn't care enough to keep track of the time because it was irrelevant to me. I know that for my first set, I literally just stayed awake until I got all 12 Atma. The second time I farmed it over the course of maybe a month or so just casually doing FATEs here and there during queues sometimes. I'm now 3/12 on a new set, that yet again, I am casually working on here and there. Atma is not as bad as people make it out to be.
