What anniversaries are observed on April 15?

April 15 is the anniversary of Helicopter Day, Will Day (Igon no Hi), Good Child Day (Yoiko no Hi). 3 anniversaries are registered for this date.

April 15: Helicopter Day, Will Day (Igon no Hi)

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What Is Helicopter Day? Every April 15th is "Helicopter Day" in Japan. The date ...

What Is Will Day? Every year on April 15th, Japan observes "Will Day" (Igon no H...

What Is Good Child Day? Every year on April 15th, Japan observes "Good Child Day...