Have you cracked the code?

For some users of Aldi, cracking their best before code has been somewhat of a struggle, but it seems this has now been made widely known. Were you shopping there today and saw the code 4203, you would know that the food was on it's last day as 42 represents week 42, which it is http://ift.tt/20LNFPo and 03 is day three of the recognised week,

Have you cracked the code?