A precise-looking calendar date is not automatically a better answer. The right level of precision is the one supported by the code and the verified brand rule.
If a format supports only broad production timing, inventing a day produces false certainty. Treat the available date context as one input and compare it with the label actually printed on the package.
Our catalogue contains 164 format records across 68 brands with listed formats. It includes codes of different lengths and structures, so a one-size-fits-all calendar parser would make more mistakes than it solves.