Best Before

This is the front panel of a pack of 'Dairy Butter - salted':

Although refrigerated, refrigeration is used to stop the butter being soft and prevents chemical breakdown. It is not: 'from a microbiological point of view, .. highly perishable and in consequence likely after a short period of time to constitute an immediate danger to human health'. It therefore has a 'Best Before' date. This is shown on the front panel of the pack and gives the date in the form day-month: