🔬 Fibonacci Day (1, 1, 2, 3)
You can spot these numbers in the spirals of sunflower seeds and pinecones.
Where: Pisa, Italy
📅 On This Day: November 23
November 23: Fibonacci Day (1, 1, 2, 3). Written the American way, November 23 is 11/23: the start of the Fibonacci sequence, 1, 1, 2, 3. In this sequence each number is the sum of the two before it, and it was made famous in Europe by the mathematician Fibonacci of Pisa, Italy.
✨ More events on this day
- 1924 🔬 Newspapers first reported Edwin Hubble's discovery that the Andromeda 'nebula' is really another galaxy, far outside our own Milky Way.
- 1963 🎨 The first episode of Doctor Who was shown on BBC television. It is now the longest-running science fiction TV drama in the world.
- 1992 💡 IBM showed off the Simon, often called the first smartphone, at a computer show in Las Vegas. It had a touch screen, email and a calendar.
🧠 Question of the day
What comes next: 1, 1, 2, 3, ...?
- 4
- 5
- 6
Show the answer
Answer: 5
Questions
What happened on November 23?
November 23: Fibonacci Day (1, 1, 2, 3). It happened in Pisa, Italy.
In the game, the "Today on Earth" panel shows this story on its day, with a question to answer and a place to fly to.
More days in November
- November 1
- November 2
- November 3
- November 4
- November 5
- November 6
- November 7
- November 8
- November 9
- November 10
- November 11
- November 12
- November 13
- November 14
- November 15
- November 16
- November 17
- November 18
- November 19
- November 20
- November 21
- November 22
- November 24
- November 25
- November 26
- November 27
- November 28
- November 29
- November 30