A batch date is most helpful when it helps you organise information you already own. It can make a drawer of similar unopened items easier to compare.
For products in the same category, record the brand, code, decoded date, purchase date, and whether the item is opened. This gives you a transparent order for reviewing or opening items; it does not create a mandatory use-by date.
The product's own printed date or open-jar period outranks a generic shelf-life assumption. If the product has neither, keep the decoded result labelled as date context, not a conclusion about condition.
Read the package marks in the right order →
Lotly