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02/02/2020 is the most palindromic date ever. https://youtu.be/4fE_sXZjxng Not only that, but it's a strobogrammatic number when viewed on a 7-segment display.
What is "most palindromic"? Wouldn't 11/11/1111 be the "most"?
Earlier quoted context omitted.
Reminds me of the interesting number paradox[1]. This can be easily extended to dates too in this manner: Every date is interesting. Proof by contradiction: If there exists a non-empty set of uninteresting dates, there would be an earliest date in this set. But the earliest such date is itself interesting because it is the earliest uninteresting date, thus producing a contradiction. [1]: https://en.wikipedia.org/wiki…
There is no largest or smallest real number. Therefore a set without a largest or smallest member is not necessarily empty. Alternatively, being the smallest in the set of uninteresting numbers does not make a number interesting, at best it is unique like every other number and therefore uninteresting.
The nice thing about today's date, 2020-02-02, is that it is palindrome in three date formats: YYYYMMDD, DDMMYYYY, and MMDDYYYY. This should probably be called "Universal Palindrome Day" because it is a palindrome irrespective of the endianness (big, little, or middle) that is used in various countries. Here is the list of all such dates until the year 9999: 0101-10-10 1010-01-01 1111-11-11 2020-02-02 2121-12-12 3030…
EDIT: fwiw, in my native language, most numbers from 100 and 1000 are pronounced middle endian, so I'm not complaining.
The Human Palindrome will be born tomorrow and die on 2121-12-12 at the age of 101. And in true palindromic fashion, his life will start and end with diapers.
I hope this is pointed out to kids in classrooms all over the world. Growing up I remember my teachers would point out these cute number tricks/events which contributed to piquing my interest in math and numbers, and eventually engineering.
> I hope this is pointed out to kids in classrooms all over the world. For at least some of them it’s the summer holidays and they are heat addled and doing something completely mindless with no idea of the day or date. I’m rather jealous.
Earlier quoted context omitted.
Reminds me of the interesting number paradox[1]. This can be easily extended to dates too in this manner: Every date is interesting. Proof by contradiction: If there exists a non-empty set of uninteresting dates, there would be an earliest date in this set. But the earliest such date is itself interesting because it is the earliest uninteresting date, thus producing a contradiction. [1]: https://en.wikipedia.org/wiki…
There is no largest or smallest real number. Therefore a set without a largest or smallest member is not necessarily empty. Alternatively, being the smallest in the set of uninteresting numbers does not make a number interesting, at best it is unique like every other number and therefore uninteresting.
The interesting number paradox applies to natural numbers, not real numbers.
> Alternatively, being the smallest in the set of uninteresting numbers does not make a number interesting
You are taking this too seriously. :-) Everyone would agree that "interesting" is subjective. This is supposed to be a humorous paradox, not a mathematical fact!
The nice thing about today's date, 2020-02-02, is that it is palindrome in three date formats: YYYYMMDD, DDMMYYYY, and MMDDYYYY. This should probably be called "Universal Palindrome Day" because it is a palindrome irrespective of the endianness (big, little, or middle) that is used in various countries. Here is the list of all such dates until the year 9999: 0101-10-10 1010-01-01 1111-11-11 2020-02-02 2121-12-12 3030…
I love the term "middle endianness" and how clearly it highlights how nuts the American date notation is. EDIT: fwiw, in my native language, most numbers from 100 and 1000 are pronounced middle endian, so I'm not complaining.
When order matters, you invariably want big-endian notation, which is why that notation is acceptable everywhere regardless of the usual native notation. But by the same token, it means that all other styles are equally "nuts". European day-month-year notation doesn't have any technical advantages over month-day-year.
The nice thing about today's date, 2020-02-02, is that it is palindrome in three date formats: YYYYMMDD, DDMMYYYY, and MMDDYYYY. This should probably be called "Universal Palindrome Day" because it is a palindrome irrespective of the endianness (big, little, or middle) that is used in various countries. Here is the list of all such dates until the year 9999: 0101-10-10 1010-01-01 1111-11-11 2020-02-02 2121-12-12 3030…
I love the term "middle endianness" and how clearly it highlights how nuts the American date notation is. EDIT: fwiw, in my native language, most numbers from 100 and 1000 are pronounced middle endian, so I'm not complaining.