This month?

I have seen eggs be fine after 3 months in the fridge. I have seen foreign eggs last 6 weeks without refrigeration, the latter part of it in the tropics. (Don't try that with US eggs--we clean them more, weakening their defenses.)

The float test is helpful here, if the egg floats then it's not a witch but you should dispose of it (or better yet, check it but be ready for the smell if it's off).

Delia Smith on how to tell a good egg.

https://www.youtube.com/watch?v=E2OWXN80NZQ

Edit: Ironically (or sadly), I was a bit too quick to call for disposal of old eggs.

If the egg floats, but has a beak and feathers, and paddling little legs, then that's a pretty darn old egg, but safe to eat.

I wouldn't put a top-floater in an omelet, but if it doesn't smell I'd still bake with it. It's really a question of taste.

Good point.