Golden Days

I haven’t been able to avoid people on my Twitter feed pointing out today’s a Pythagorean Triple, if you write out the month and day as digits and only use the last two digits of the year. There aren’t many such days; if I haven’t missed one there’s only fourteen per century, and we’ve just burned through the tenth of them. But if you want to have a little fun you might try working out whether I’m correct, and when the next one is going to be.

I don’t know of an efficient way of doing this, the sort of thing where you set up a couple of equations and let your favorite version of Mathematica grind away a bit and spit out an array of dates. This seems like the sort of problem best done by working out sets of integers a, b, and c, where $a^2 + b^2 = c^2$, and figure out what sets of those numbers can plausibly even be arranged as dates.

The more mysterious thing to me is that I don’t remember this being so much pointed out when we had the same Pythagorean Triple day in May, and not at all when we were really rich with them back nearly a decade ago. But I wasn’t on Twitter back then; maybe that’s the problem. I also haven’t seen people complaining that it’s a trivial thing not worth pointing out; it may be trivial, but if we aren’t going to enjoy pretty alignments of numbers, what are we supposed to do?

Author: Joseph Nebus

I was born 198 years to the day after Johnny Appleseed. The differences between us do not end there. He/him.

8 thoughts on “Golden Days”

1. Thanks – I didn’t notice!! I am always late to recognizing such things – I had missed 11/12/13 as well recently.

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1. I was late on 11/12/13 myself. But if you’re willing to take dates in the British style, day-month-year, there’s enough time to get ready for it yet.

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1. I think this was the reason I missed it :-) We use the British style, too! So I am still looking forward to 09:10 11.12.13

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1. Thanks for the reminder – I would have missed it again :-) One hour to go in my timezone!

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2. I made a simple math mistake – it is two hours to go ;-)

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2. Lol. Interesting is all I can say. I hate math!

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