Fibonacci Day 1590

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 1590?

Fibonacci Day 1590 is on Friday, 23 November 1590.

What day of the week is Fibonacci Day 1590?

It falls on Friday.

How is Fibonacci Day calculated?

This event is observed every year on 23 November.