my gsm hatch every 6 days at 84 like clockwork for years. some pairs might be different, but most of the breeders in know who have gsm are 6 days. if you keep your temps steady over 80, they will hatch on the 8th day. if its on day 9 or 10 then its most likely from a temp dropping or a swing. once they get better laying they will get on a schedule and you will be able to time when they are gonna lay during the day. keep a journal.