I'm thinking about making a tough decision to open up eggs that might still be alive but haven't hatch on D23. I saw that some people said if the humidity was too high for them then they won't be able to hatch so I didn't really see there being a loss in it and figured I'd ask what others thought on the matter. I'd only crack open the part with the air cell unless any has to say otherwise
When you decide to open it, wait 24 more hours then do it.