I've hatched a couple of clutches under broody hens but this is my first time using an incubator so please forgive my ignorance. I've read a lot on this site and elsewhere but I'm still not sure when I should raise the humidity and stop turning the eggs. I set the eggs at lunchtime on Saturday 4th March. Does that count as day 1 or day 0? It's now 7.30am on Tuesday 21st March (here in Australia) so am I air day 18 or day 17? Should I be locking down today or tomorrow? Thanks in advance.