Fibonacci Day 1544

Thursday, 23 November 1544

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 1544?
Fibonacci Day 1544 is on Thursday, 23 November 1544.
What day of the week is Fibonacci Day 1544?
It falls on Thursday.
How is Fibonacci Day calculated?
This event is observed every year on 23 November.