Fibonacci Day 2023

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 2023?

Fibonacci Day 2023 is on Thursday, 23 November 2023.

What day of the week is Fibonacci Day 2023?

It falls on Thursday.

How is Fibonacci Day calculated?

This event is observed every year on 23 November.