A while back, I came across this article. It was from back in the 70s. After I read the whole thing, I came to the conclusion that I could just stockpile eggs in my refrigerator for the winter, and they would still be fine by the time the hens started back to laying. Of course, that assumes I have room for that many dozen eggs in the fridge.
It was a moot point this year because I miscalculated when to start stockpiling, and by the time the hens quit, I only had 3 or 4 dozen saved up. As they ran low, I bought a dozen eggs at the store, because I wanted to make lots of Christmas cookies. Never had time for that, and before I even opened the dozen from the store, the hens started to lay again.
Of course it all depends on your number of hens and your egg consumption, and how much time the hens take off for the winter.
But after I read this article, I got the impression that fridge eggs could still be good after 6 months!
https://www.motherearthnews.com/real-food/how-to-store-fresh-eggs-zmaz77ndzgoe
PS the article is long. Skip to the bottom if you just want the conclusions.