You got it right. Longest day is 13 1/2 hours. Shortest day is 11 1/2 hours. However, I pretty much got it to produce about an oscar per plant dried. Whether its a 2.4 gallon or 5 gallon pot it still usually gets the same result. This one was a mom first before kicking her out in the sun. Cool thing about our place is that you can run a veg box separately, then throw them out to flower. No matter what time you throw em out, they will automatically flower. Therefore, I was wondering how an indoor setup would be if you guys ran 18 on for veg, then flip em to 13 1/2 to flower. It works and will usually give you more yield. We do that with the summer sun. It works perfect. Oh, btw, final weight just depends on the genetics we use here. These Aliens are beautiful and are adapting well to our climate patterns. I can only imagine the next generation of acclimated beans. Aloha and happy healing. PL.