The National Lager Day is always observed in the United States of America on the 10th day of December each year.
No official record had been found as to the origin and purpose of this day. As humanity, in general, does not really require special days to have a taste of alcoholic beverages, this day may just have been started and carried on naturally. What makes this day special though is its celebration of the wonderful craftsmanship in preparing lagers which is fermented from the bottom and lightly vaulted.