Ear Day in Japan
Ear Day in Japan is held on March 3. Mimi No Hi. This event in the first decade of the month March is annual. 
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While most people celebrate Hinamatsuri (Girl’s Festival) on this day, some also celebrate … their ears. Double three in this case is read as mi-mi, the Japanese word for ear.
Similar holidays and events, festivals and interesting facts
Old Stuff Day on March 2
Namesake Day on March 2 (is celebrated every first Sunday of March);
Dr. Seuss Day on March 2
World Butt Day on March 3 (The idea for the holiday belongs to Kara Kitty Blair, Rae Woodbuns, Melissa Benzinger in 2012);
Peach Blossom Day and Peach Blossom Festival in Japan on March 3
I Want You to be Happy Day on March 3
What If Cats and Dogs Had Opposable Thumbs Day on March 3
Holy Experiment Day on March 4 (The Lord truely works in mysterious ways);
International Scrapbooking Industry Day on March 4
Fun Facts About Names Day on March 4
Hug a GI Day on March 4
Mini-skirts Day on March 4 (the creator of mini-skirts is considered to be Englishwoman Mary Coint - a British designer and fashion designer who introduced her in 1965. Even micro-skirts have appeared since the mid-1960s. The whole difference is how to wear them)