National earmuffs day 2021 This day is observed for every March 13th globally .It reminds us to protect your ear warms in different kinds of weather and be safe from your ears from many issues .And the brief history is behind that ,Farmington, Maine is now the “Earmuff Capital of the World”On March 13, 1877, he was awarded a patent for his new creation. It was one of many I would earn. Greenwood was a prolific inventor, but the invention he is most known for is the earmuff. For almost 60 years, Greenwood manufactured these ear protectors, which provided jobs for the people in the Farmington, Maine area.This is the reason to recognize this day .