Even if eggs are left unrefrigerated in the supermarket, they should be stored in the refrigerator at home. Because eggs have a natural protective layer, the so-called cuticle, which means that they can be kept for 18 days after being laid. After about three weeks, the natural protection is no longer active, which is why the eggs should be stored in a cool place.
Note : Once you have refrigerated the eggs, you must not interrupt the cold chain until they are ready to be eaten. Otherwise, condensation can form on the shell and pathogenic germs can penetrate the inside of the egg.
Basically, you should always keep an eye on the shelf life of eggs. Once the egg has been laid, 28 days pass before the best-before date. Afterward you should only use raw eggs, even if they have been stored in the refrigerator, for dishes that are heated to more than 70 degrees, e.g. scrambled eggs with bacon. Boiled eggs, on the other hand, can be kept for two to four weeks if they have been stored in the refrigerator.