📅 June 30 in the Time Tunnel
What happened on June 30? Travel back in time and find out — then test yourself with the quiz.
🎉 Special days
- ☄️ Asteroid Day
⏳ On this day in history
- 1859Acrobat Charles Blondin crossed Niagara Falls on a tightrope
- 1864President Lincoln gave Yosemite Valley to California to protect it — an early step toward national parks
- 1905Albert Einstein sent in his paper on special relativity
- 1937London started the world’s first emergency phone number: 999
- 1972The first "leap second" was added to the world’s clocks
🎂 Born on June 30
- 🏊 Michael Phelps (1985) — Olympic swimmer
See everyone born on June 30 →
June 30 quiz
In what year? 🤸 Acrobat Charles Blondin crossed Niagara Falls on a tightrope
In what year? 🏞️ President Lincoln gave Yosemite Valley to California to protect it — an early step toward national parks
In what year? 🧠 Albert Einstein sent in his paper on special relativity
Which famous person was born on June 30?