Friday, November 24, 2023

Fibonacci Day (11/23)


(Image: By Hans-Peter Postel - Own work, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=1739679)


A high-school math fan of mine recently posted a reminder that November 23 is Fibonacci Day (based on the beginning numbers of the Fibonacci sequence: 1 1 2 3, or 11/23). An extension of a special version of this date would be 11/23/5813 (using the next numbers of the sequence 5, 8, 13). This seems like a long time away, but if one includes the Jewish calendar (currently in year 5784), this date is just 29 years from now.

For date conversions: https://www.ocjewish.com/calendar/view/year.asp?tdate=08%2F07%2F2053.

Prior post: https://jamesmacmath.blogspot.com/2023/09/rosh-hashanah-5784.html.

Pi Day: https://jamesmacmath.blogspot.com/2021/03/pi-day-3-14-2021.html.

The Fibonacci numbers are sequence A000045 in the On-line Encyclopedia of Integer Sequences. Additionally, there are thousands of other sequences which are variations based on this core sequence.

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