I just did 21 days after the night I set them! Id you're supposed to wait maybe that was my issue! Well I just ordered Serama eggs online, so those will be my next batch, and my first time with shipped eggs.Do you think they will be small enough I can use the pheasant/quail turning tray? Then I can fit all of them in the incubator without having to put any under a broody!
If you set on a Tuesday at say 10 am, Wednesday at 10 am would start day 1, Thursday 10, day 2 and so on. Chicks need (with correct temps) 21 day of incubation, and they don't have one day until they've been incubating 24 hours. Generally if you set on a Tuesday, the expected hatch day would be Tuesday 3 weeks later.
I have never done seramas so I can't give an opinion there.