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Palindrome Day 20200202
- FlyMoreRockets 7y agoDepending on how you write your dates, 20211202 is the next one.
- AnimalMuppet 7y agoAnd, if you write your dates that way, what will the one after that be? 30100103?
- RandomBacon 7y agoIn a thousand years, we might be on yet another calendar system. https://en.wikipedia.org/wiki/List_of_calendars https://en.wikipedia.org/wiki/List_of_calendars
- runj__ 7y agoI think we already are using another calendar system! Most used dates in existence are probably using Unix time, at least I know I only check the calendar a few times a day but I have systems running checking it multiple times per second.
- smaccona 7y agoWhat about 20300302, 20400402, etc?
- AnimalMuppet 7y agofacepalm Yes.
- OJFord 7y agoIsn't that the next one regardless, just when it is depends on how you write dates?
- crispyporkbites 7y agoyou can write dates however you want to, it's just a made up notation. It would not be difficult to come up with way of writing dates which is almost always a palindrome.
- hkmurakami 7y agoI 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.
- lostlogin 7y ago> 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.
- Z1515M8147 7y agoMy high school math tutor's cute thing to point out was that for asymptotic functions like the graph of y = 1/x [1], since the universe is spherical, the asymtotes will travel off the page in a straight line around the universe and eventually meet, coming back onto the graph in another quadrant from the other direction, so in fact it is one single connected line. I went into engineering and not physics, and never learned enough of the latter to question whether he was serious. Furthermore, since this was the first time any math tutor of mine in 18yrs had ever related anything to the real world, it seemed like magic to me and so I still ignorantly tell people it to this day. [1] https://www.wolframalpha.com/input/?i=Y%3D+1%2Fx https://www.wolframalpha.com/input/?i=Y%3D+1%2Fx
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- threatofrain 7y agoProject Euler palindrome problem. https://projecteuler.net/problem=4 https://projecteuler.net/problem=4
- mcshicks 7y agoFor those in the US, also groundhog day and superbowl sunday (american football championship).
- slumos 7y agoAnd also my birthday!
- dsiegel2275 7y agoMine also! Having a palindrome / groundhog / birthday / super bowl party tomorrow!
- thackerhacker 7y agoTomorrow may also be groundhog day.
- strictnein 7y ago> superbowl sunday (american football championship). And for many it's "watch a bunch of ads with budgets in the $5-10+ million range" day.
- clSTophEjUdRanu 7y agohttps://fivethirtyeight.com/features/how-much-football-is-even-in-a-football-broadcast/ https://fivethirtyeight.com/features/how-much-football-is-ev...
- arthurfm 7y ago02/02/2020 is the most palindromic date ever. https://youtu.be/4fE_sXZjxng https://youtu.be/4fE_sXZjxng Not only that, but it's a strobogrammatic number when viewed on a 7-segment display.
- CraftThatBlock 7y agoWhat is "most palindromic"? Wouldn't 11/11/1111 be the "most"?
- qndreoi 7y agoThe video notes that it is also the 33rd day of the year and 333 days remain. Thus another palindromical event.
- narraturgy 7y agoI would argue that your example is tautological and therefore less significant.
- susam 7y agoThe 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 3030-03-03 4040-04-04 5050-05-05 6060-06-06 7070-07-07 8080-08-08 9090-09-09 The next such one is over 101 years away from now. Here is my own blog post on this topic: https://susam.in/blog/universal-palindrome-day/ https://susam.in/blog/universal-palindrome-day/ :-)
- ph2082 7y agoSo it happened like 900 yrs ago and after next one it almost take 900 yrs for same date to happen. And I am alive on one of this rare event. Need to cut Cake. :)
- felipemnoa 7y agoNot to sound corny but if you really think about it every single day is rare, just in different ways.
- susam 7y agoReminds 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/Interesting_number_paradox https://en.wikipedia.org/wiki/Interesting_number_paradox
- mmhsieh 7y agothere has got to be a better objective method to define interesting numbers other than inclusion in a number sequence compendium. perhaps if we hypothesize that there are a (countably) infinite number of number theoretic theorems, might every number be either a unique case or the largest or the smallest example of some instance?
- JacobAldridge 7y agoI remember where I was at 8.02 pm (2002) on 02/02/2002 - on the phone to my mum, who was in a different timezone so couldn’t enjoy that palindromic minute. Sadly I slept through 0202 this morning...
- freyir 7y agoThe 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.
- eganist 7y ago> 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. Their^
- procombo 7y agoFun, clever, and witty comments are increasingly rare here on YC. Thank you for this.
- sage3 7y agoOverdone, silly, and cringy joke comments are leaking over to YC. Please don't let this become the norm.
- mcv 7y agoAny responsible parent will call him Bob or Anna, of course. Taking surnames into account is going to be a bit harder. Here's a good resource for anyone becoming a parent today: https://parentinghealthybabies.com/palindrome-names/ https://parentinghealthybabies.com/palindrome-names/
- ewindal 7y agoOof, that list is terrible. Natan is listed twice, and there’s at least one name that isn’t a palindrome. The only two names that really work from that list is Anna and Hannah. Nobody should name their kid Bob in 2020, it’s not a «young» name yet. Thr older Bobs need to die off before it’s an acceptable kid’s name. As for the rest of those names, I refuse to acknowledge them as names. They’re more like onomatopoeia.
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- jyap 7y agoThere’s also coming up: 02/02/2020 02:02:20.20
- geocrasher 7y agoThis post would not be complete without The Ballad of Palindrome by Riders In The Sky: https://www.youtube.com/watch?v=xzvQEstC03o https://www.youtube.com/watch?v=xzvQEstC03o A Spaghetti Western style story, starring your hero, Palindrome.
- mcv 7y agoDon't forget Bob, by Weird Al Yankovic: https://www.youtube.com/watch?v=gAfIikFnvuI https://www.youtube.com/watch?v=gAfIikFnvuI
- isoskeles 7y agoHow would this be a Spaghetti Western rather than just an American Western?
- toyg 7y agoIn some quarters, “spaghetti” has just become a derogative term meaning “low quality”. Sadly, the concept that “spaghetti western” was actually a genre with certain characteristics but containing a number of masterpieces, was lost under the wave of poor clones of The Good, The Bad and The Ugly.
- geocrasher 7y agoYou're right, it was the wrong term.
- SimeVidas 7y agoFor once, I found out about this early in the morning instead of the day after.
- nexuist 7y agoIt's also my 21st birthday! So close.
- toyg 7y agoHappy birthday! Same for me, although my years are almost exactly twice yours.
- bartkappenburg 7y agoAlso: it’s day 33 (palindrome) of the year and we have 333 (palindrome) days left.
- punnerud 7y ago02-02-2020 also work (02022020)
- bmn__ 7y agoFTA: > Because of the Gregorian Calendar Reform of 1582, the numbers of days after 1001-01-01 are fictitious, strictly spoken. They are valid only then, if we adopt the reform for dates before 1582, subsequently. The explanation is muddled. This concept has a name, the definition at WP is succinct and clear: http://enwp.org/Proleptic_calendar http://enwp.org/Proleptic_calendar
- aoloe 7y agofor those who slept in, 05.05.2020 is coming soon... the mirrored day...
- toyg 7y agoAnd it’s my birthday. I always joked that my birthday was US-proof (I’m not American), but this year it’s extra-special.
- Insanity 7y agoA happy birthday to you!
- pkamb 7y agoToday is my son's due date! I've been hoping for months that he'll be here on time for this palindromic birthday, but nothing yet...
- toyg 7y agoEh man, can’t do much about these things. I was born on 02/02, married on 05/05, first child on 07/07, but the second child “broke the chain” with a 21/11... ️
- spectrum1234 7y agoToday was my wife's due date. The baby came 10 days early though. It's been a great experience!
- DonHopkins 7y agoIt's finally the year of the DECSYSTEM-2020! It was so far ahead of its time. https://en.wikipedia.org/wiki/DECSYSTEM-20 https://en.wikipedia.org/wiki/DECSYSTEM-20
- eganist 7y ago> 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. Amazingly, my last comment swapping "his" with "their" was flagged to death. If we're ever going to be more embracing of people other than men, it's gotta start with us. We can't just mis-gender and then pat ourselves on the back thinking we're doing something to fix the inequalities in our fields, and the fact that it sticks out like a sore thumb on hackernews is heartbreaking. :(
- CrazyStat 7y agoI'm all for referring to people by their preferred pronouns, but complaining about "misgendering" a hypothetical person who exists only as the subject of a joke seems unnecessary. If the author of the joke decides to use male pronouns for his hypothetical person, then so be it. There's nothing to be gained by "correcting" that.
- eganist 7y agoTheres plenty to be gained; it's about making it second nature in order to not make the same mistake with an actual, living, breathing human being.
- CrazyStat 7y agoAn actual, living, breathing human being is not invented by the author. Do you also complain about novelists misgendering their fictional characters?
- eganist 7y agoThat's a novel perversion of the assertion. An author inventing a character can create any character they want. But if you're going to make a remark about a hypothetical person who could exist, don't bound the gender. The two are completely incomparable. We could keep going down this rabbit hole. Up to you.
- 2easy 7y agoHappy birthday to me!
- gabyn 7y agoThere will be lots of palindromes coming up:20211202,22200222,21211212,22011022,22211222...
- Theorance 7y agoThere is also the 20th of February. 20200220 yy/mm/dd 02202020 mm/dd/yy 20022020 dd/mm/yy