That string of numbers stamped on the side of your egg carton is not random — it is a precise timeline regulated by the USDA. Understanding three distinct codes tells you not just whether your eggs are safe to eat, but how nutritionally valuable they still are.
En bref
- —A 3-digit Julian date shows the exact day eggs were packed
- —Eggs can be sold up to 30 days after that pack date
- —Fresher eggs retain more choline, antioxidants, and protein quality
The Julian date: the three-digit code that tells you exactly when your eggs were packed
The most important number on any egg carton is the three-digit Julian date. It runs from 001 (January 1st) to 365 (December 31st) and marks the precise calendar day the eggs were washed and packed into that carton — not when the hens laid them.
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