Fibonacci Day 2149

Sunday, 23 November 2149

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

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Frequently asked questions

When is Fibonacci Day 2149?
Fibonacci Day 2149 is on Sunday, 23 November 2149.
What day of the week is Fibonacci Day 2149?
It falls on Sunday.
How is Fibonacci Day calculated?
This event is observed every year on 23 November.