What anniversaries are observed on December 6?

December 6 is the anniversary of Sound Day (Oto no Hi), Symphony Day, Radioisotope Day. 5 anniversaries are registered for this date.

December 6: Sound Day (Oto no Hi) and 4 More Anniversaries

♐ Zodiac Sagittarius

📊 Day 340 of 365 25 days remaining

🌸 Season Winter

What Is Sound Day? December 6th is "Sound Day." It commemorates December 6, 1877...

What Is Symphony Day? December 6th is "Symphony Day" in Japan. On this date in 1...

What Is Radioisotope Day? December 6th is "Radioisotope Day" in Japan, marking t...

What Is Infra Mirai Day? December 6th is "Infra Mirai Day" ("Infrastructure Futu...

What Is Big Sister Day? December 6th is "Big Sister Day" (Ane no Hi). It was est...