How to tell if an egg is fresh- if the egg lies on its side on the bottom, it is very fresh. If the egg stands up and bobs on the bottom, it isn't quite as fresh. If the egg floats on the surface, discard.
How to judge the freshness of your eggs. This will work for store bought eggs too. If you use this with eggs from your chickens, refrigerate afterwards. You washed the bloom off and they are no longer naturally preserved.