In this app you can enter a LOT number, which in most cases indicates the date of manufacture or the last sales date either as a day number (number of days from new year) or weekday + day (indicated either with a letter from 'A' to 'G': A = Monday, or a number from 1 to 7 where 1 = Monday). As a result, you will know if the date is older or younger than today. If the younger is probably the date of the last sales day.
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