April 11 Anniversaries

Metric System Promulgation Day

Historical Anniversaries

What Is Metric System Promulgation Day? Every April 11th is "Metric System Promu...

Guts Pose Day

Historical Anniversaries

What Is Guts Pose Day? Every April 11th is "Guts Pose Day" in Japan. On April 11...

Solid Good Breakfast Day (Shikkari Ii Choushoku no Hi)

Wordplay Anniversaries

What is Solid Good Breakfast Day? Every year on April 11th, Japan observes "Soli...