This really depends on when the tortoise emerges from the shell. I know a few people that have told me their angulates stayed in the shell 2 or 3 days after pipping, and emerged with the yolk sac almost fully absorbed. Mine pipped on May 4th and I opened the egg. The yolk sac was fairly large. It took 3 days until it was down to a small bump. Today, a week in, its just a very small hard scar and is nearly gone and closed up. I will try to remember to take a picture later and show you.So amazing, Carol do you know how long it takes for an egg sack to close? My little one came out of the ground with it nearly closed (took a day or two then it was completely closed) so I’m just trying to figure out a more precise ‘hatched’ date as a DOB..