The native Polistes aurifer. (golden paper wasp) frequently. overwinters in attics of homes. The queens emerge during the. first warm days of spring (as. early as March and April), select. a nest site, and build a small. paper nest in which they lay.
The length of incubation (or amount of time it takes for eggs to hatch) depends a lot on weather conditions. Temperature, humidity, rainfall, and other factors influence incubation. Generally, land turtle incubation ranges from 45-90 days (I know that's a long time to wait when you want to see baby turtles!). I suggest you start checking on the nest every couple days starting at the six week point. I wouldn't expect to see any babies until August at the earliest.
Just getting free from the shell can take 20 minutes or longer. According to 2011 research from the University of Western Sydney, certain freshwater turtle species can communicate with other embryos in a nest to let them know they are close to hatching. Less advanced embryos then increase their development rate so they can hatch around the same time.