chappers laid 20 eggs on boxing day, i was at my parents for the day and stayed there overnight, left her bin of compost in her tank with her as she was digging but didn't think she'd be due for another couple of days. came back on the 27th and there they were. two shrivelled up after a couple of weeks, one fertile one not (husband insisted on cutting them open to see what was inside, charming) the rest are still incubating and seem fine. some were stuck together but they seemed to separate ok. i would put them straight in the incubator if you can but dont give up on them if you've found them late.