>>1298021Fresh eggs straight from the chicken are fine to have unrefrigerated for a week or more. Store bought eggs are always suspect regardless of where you live due to all the manner of things done to them from chicken to you. In the USA, the most notable of these things is that companies wash the eggs before shipping which destroys the natural microbe barrier on the egg shell. In in locations where they do not wash the eggs, the handling procedures may inadvertently remove this coating or there may be other things that damage it on a chemical level.
Thus, if you want to use the best eggs, use freshly laid eggs that you personally collected. Only then you'll know for a fact nothing will have happened to them. Not only that, but since you'll be the one collecting them, you know exactly how old the eggs are from the beginning. The age of store eggs is HIGHLY varied.
If you don't have a source for fresh eggs, I suggest heading over to
>>1296618 where you can learn how to raise your own chickens, turkeys, geese, or ducks for eggs.