Ok, all the info I'm giving you is based on SeeMoreBuds' book "Marijuana Buds for Less"
From seedling to flowering, was 16 days. He forces it to flower early. In the book he notes "The complete life cycle from germination through flowering can take more than 20 weeks"
From flowering to harvest was 52 days. Meaning, counting the 16 days of seedling to flower, he harvested on the 68th day.
If you can, I SERIOUSLY recommend getting is book. It's AWESOME. It like a grow journal, where every day he tells you what's going on, what he did, and shows you pics.