I keep my eggs for up to a month, depending on the season (the fridge gets opened a lot in summer, so I trust eggs a little less during that season). Whenever I crack one open, I check for a healthy yellow-orange colored yolk, clear egg white, and make sure there are no discolorations or funky smells.
When in doubt, check the package for a "sell by" date before throwing it away and put a tiny sticker on your egg holder in the fridge. This way, you won't forget when to throw them out and buy new ones.
Theoretically, you can use eggs for at least a week or two after the sell-by date, but again, it depends on the season and storage conditions.
As a side note, I've noticed that old eggs seem to have a slight grayish hue to the shell. I'd describe it as an odd, nearly transparent gray that makes the eggs look dirty.
This answer was edited by HarvestMoon 240 days ago.
Reason: Typo.
