Oct 23, 2017 - Most USA manufactured MREs (both military and civilian) use a 4 digit Julian Date code. Individual MREs may or may not have a date code,. AAVSO produced JD Calendars give the last four digits of the Julian Day for each day of every month for a year. The months January-June are on one page while July–December are on the second page. For the complete JD, add 2,450,000 to the four digit value given in the calendar for the Astronomical Day of your observation. How to Figure Out Your Food Storage Manufacture Date; How to Figure Out Your Food Storage Manufacture Date. By Brandon from Ready Store. Expiration Dates Many times. They are not the 4 digit Julian codes that are mentioned in all the articles about identifying the date code.
Does not have a uniform system of coding expiration dates on food products as of 2010, according to the U.S. Department of Agriculture. The federal government only requires expiration dates on baby foods and infant formula.