Fibonacci Day 1138

Fibonacci Day uses the month and day notation 11/23 to echo the opening numbers of the Fibonacci sequence: 1, 1, 2, 3.

Frequently asked questions

When is Fibonacci Day 1138?

Fibonacci Day 1138 is on Wednesday, 23 November 1138.

What day of the week is Fibonacci Day 1138?

It falls on Wednesday.

How is Fibonacci Day calculated?

This event is observed every year on 23 November.