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Happy Pi Day

CmdrTaco posted more than 3 years ago | from the inevitable-number-patterns dept.

Math 341

I just wanted take a break to wish everyone a Happy Pi Day. It's 3/14, so I hope you are all enjoying your day off, and remember not to bother checking your mailbox.

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341 comments

Tacoooo (1)

Shikaku (1129753) | more than 3 years ago | (#35478928)

Where's my pi cake?

Re:Tacoooo (4, Funny)

Quiet_Desperation (858215) | more than 3 years ago | (#35478976)

The cake is a pi.

Re:Tacoooo (0)

Anonymous Coward | more than 3 years ago | (#35479130)

Actually, a round cake would be 2pi

No it's not. (0)

Anonymous Coward | more than 3 years ago | (#35478936)

It's 15/3.

Re:No it's not. (1)

Chrisq (894406) | more than 3 years ago | (#35478968)

Its still 14/3 here

Re:No it's not. (1)

Anonymous Coward | more than 3 years ago | (#35479126)

Either way, it's not 3/14 anywhere. In fact it's never 3/14. There aren't 14 months in the year.

Re:No it's not. (1)

Anonymous Coward | more than 3 years ago | (#35479162)

There is more than one way to skin a cat there chief.

Re:No it's not. (-1)

Anonymous Coward | more than 3 years ago | (#35479242)

ISO STANDARD DATE FORMAT:
YYYY-MM-DD
There are more than three months in the year. When discussing an annual occurance, leaving the year off is reasonable. Please stop being the annoying European everybody hates.

Re:No it's not. (0)

Canazza (1428553) | more than 3 years ago | (#35479402)

you must hate a lot of Europeans.
And Africans
and Asians
and Australians
and Central Americans
and South Americans
and Arabs
and Indians

Re:No it's not. (1)

Anonymous Coward | more than 3 years ago | (#35479550)

"ISO STANDARD DATE FORMAT" does not use slashes to separate the date parts.
Knobcake.

Re:No it's not. (0)

Anonymous Coward | more than 3 years ago | (#35479024)

According to the ISO standard, it's 2011/3/14 GMT.

So it's the 2011th 3/14

Suck it up, princess.

Re:No it's not. (0)

Anonymous Coward | more than 3 years ago | (#35479454)

Since when did time begin at year 0? Much as we'd all like to forget and use unsigned ints, there was a time before!

Actually it is 14/3 (0)

masterpiga (1590499) | more than 3 years ago | (#35478938)

And it's not even a prime... just another blunt day.

Re:Actually it is 14/3 (2)

houstonbofh (602064) | more than 3 years ago | (#35479044)

Just because you people screwed up your calendar so you do not have Pi day, is not our fault. In the US, we like our pie... I mean Pi.

Re:Actually it is 14/3 (0)

Anonymous Coward | more than 3 years ago | (#35479278)

I'm sorry, but day day year.

Re:Actually it is 14/3 (0)

Anonymous Coward | more than 3 years ago | (#35479392)

No we just have it slightly later on the 31st of april

Re:Actually it is 14/3 (1)

masterpiga (1590499) | more than 3 years ago | (#35479486)

No we just have it slightly later on the 31st of april

Jeees, so there are countries where April has 31 days. The world is really a crazy place. By the way, like that we lose the slash as a decimal separator. I still prefer to wait until they add two months to the calendar.

Re:Actually it is 14/3 (1)

mooingyak (720677) | more than 3 years ago | (#35479544)

No we just have it slightly later on the 31st of april

Let me know how that works out for you.

Re:Actually it is 14/3 (1)

Laurence0 (832251) | more than 3 years ago | (#35479390)

It's only pi day if you use the American notation...

So I guess that makes it American Pi day.

Is it Twelvember yet? (2, Insightful)

mangu (126918) | more than 3 years ago | (#35478948)

3/14 is the third day in the fourteenth month.

Oh, I see, they are using middle-endian notation.

Re:Is it Twelvember yet? (0)

Anonymous Coward | more than 3 years ago | (#35478984)

Most countries use year-month-day notations...again it's the US who has to be backwards/difficult.

Re:Is it Twelvember yet? (1, Insightful)

NevDull (170554) | more than 3 years ago | (#35479158)

It's simple to say that it's a matter of being difficult, but for most purposes of person-to-person communication, isn't the month often more relevant than the day of month when conveying information?

"Which year?" is solved for most purposes by assuming the current year and getting a sense of tense for correction.

"Which month?" gives me an idea of the sense of urgency for paying attention to your story. If something's happening this month or next, or happened last month, it's likely more significant than if you start out telling me December when the current month is March.

"Which day?" without the month ends up making one scramble for context.

While YYYY-MM-DD makes sense for those of us who get the importance of sorting, for people, "March 14, 2011" conveys information in what I think to be descending order of importance for people, and to then transcribe it as 3/14/2011 isn't so damn evil...

Re:Is it Twelvember yet? (0)

somersault (912633) | more than 3 years ago | (#35479558)

This is the sort of reasoning you get from religious nuts and Apple fan boys. Over here we'd say "14th of March, 2011". If it were just down to that then you could go either way, but for writing purposes, it makes sense to have things in order of how regularly they change, ie DD-MM-YYYY, or YYYY-MM-DD (which is the ideal format, since sorting numerically also sorts by date..).

Re:Is it Twelvember yet? (0)

Anonymous Coward | more than 3 years ago | (#35479304)

Nah, it just we're right, and everyone else isn't (and jealous)

Re:Is it Twelvember yet? (1)

xMrFishx (1956084) | more than 3 years ago | (#35478996)

3/14 is the third day in the fourteenth month.

Not in the real world it's not.

Re:Is it Twelvember yet? (0)

Anonymous Coward | more than 3 years ago | (#35479508)

In this "real world" Sunday is the beginning of the week... even though it is part of the weekend.

Re:Is it Twelvember yet? (1)

Chrisq (894406) | more than 3 years ago | (#35479006)

3/14 is the third day in the fourteenth month.

Oh, I see, they are using middle-endian notation.

In hex its E/3 or E-3 which has a nice symmetry

Re:Is it Twelvember yet? (1)

Chrisq (894406) | more than 3 years ago | (#35479042)

3/14 is the third day in the fourteenth month.

Oh, I see, they are using middle-endian notation.

In hex its E/3 or E-3 which has a nice symmetry

And in binary its 1110-11 which is also quite nice

Re:Is it Twelvember yet? (0)

Anonymous Coward | more than 3 years ago | (#35479030)

2011-03-14? Do you have a better date format? If you omit the year, it is 3-14.

Re:Is it Twelvember yet? (1)

slim (1652) | more than 3 years ago | (#35479218)

It is only improved by the Long Now Foundations's leading digit.

02011-03-14

You know, to avoid the Y10K problem. (Or, less facetiously, to remind us that there's a lot of future to come).

Re:Is it Twelvember yet? (1)

koinu (472851) | more than 3 years ago | (#35479032)

I like the stupid articles because of the funny comments that follow. Thanks! :)

Re:Is it Twelvember yet? (3, Insightful)

bigstrat2003 (1058574) | more than 3 years ago | (#35479112)

For fuck's sake, can we all please stop insisting that a particular arbitrary way to represent dates is better? It's pretty asinine how this gets brought up so much.

Re:Is it Twelvember yet? (4, Funny)

hduff (570443) | more than 3 years ago | (#35479338)

For fuck's sake, can we all please stop insisting that a particular arbitrary way to represent dates is better? It's pretty asinine how this gets brought up so much.

Sure. We can argue over which way the toilet paper goes or 'vi vs. emacs' or any number of pointless, non-winnable arguments that fuel the growth of civilisation.

Your choice.

Re:Is it Twelvember yet? (1)

SurfMan (969573) | more than 3 years ago | (#35479462)

As you're on the subject, toilet paper goes with the loose end on the outside, i.e. not against the wall.

Re:Is it Twelvember yet? (0)

Anonymous Coward | more than 3 years ago | (#35479394)

No, because middle-endian is the most retarded storage method EVER, period.
Middle-endian royally screws the hell out of dating systems if there is no country-of-origin data. (not to mention other storage methods in general that use middle-endian)

The other 2 methods are pretty easy to understand, the year is the big one, once you figure that out, it is simple. (unless some idiot uses short-year notation, oh hey remember Y2K?)
In middle-endian nonsense, you need things like this to figure out that it is middle-endian. (with lack of origin)

Re:Is it Twelvember yet? (1)

arth1 (260657) | more than 3 years ago | (#35479480)

Indeed. And let's go with a non-arbitrary way, like YYYYMMDD, which is never ambiguous and actually _sorts_.

You mean Half-Tau Day (0)

Anonymous Coward | more than 3 years ago | (#35478960)

Actually saw this gaining some exposure today...

http://tauday.com

Pi Day (0)

Anonymous Coward | more than 3 years ago | (#35478962)

tsk tsk... keep it. I want my steak and blowjob.

And just as important. (5, Insightful)

barfcat (1741432) | more than 3 years ago | (#35478964)

I'd also like to wish everybody (and also remind them) a happy steak and BJ day. It's exactly one month after V-day which we all know is for the women. This holiday evens out the universe.

Re:And just as important. (1)

Anonymous Coward | more than 3 years ago | (#35479222)

As funny as it sounds, it actually IS a "holiday" in Japan and S. Korea called "White day". http://en.wikipedia.org/wiki/White_Day and it is like V-day, but for the ladies. (Yes, on V-day women give MEN the chocolates, etc, in Japan, then a month later, the guys up the ante with gifts. According to Wikipedia, in S. Korea the men give other types of candy instead of chocolates or gifts.)

Re:And just as important. (1)

AGMW (594303) | more than 3 years ago | (#35479228)

I'd also like to wish everybody (and also remind them) a happy steak and BJ day. It's exactly one month after V-day which we all know is for the women. This holiday evens out the universe.

I'm guessing the BJ Day is for men then ...

Not a good estimate (-1, Troll)

Anonymous Coward | more than 3 years ago | (#35478978)

0.214286 (=3/14) is not a good estimate of Pi. Writing it as 14/3 gives 4.666 which isn't right either.

July 22nd (22/7) would be the best day to celebrate Pi day.

Tau Day () should be 11 July or 7 November instead of 28 June.

Almost there... (3, Insightful)

nate nice (672391) | more than 3 years ago | (#35478982)

Only 4 more years until 3/14/15. That's the big one and I expect math departments the world over to go overboard on the candy and soda that day.

Re:Almost there... (5, Insightful)

Haedrian (1676506) | more than 3 years ago | (#35479028)

We could easily extend that to

3/14/15 9:26:53 am

And have a real big bash.

Re:Almost there... (1)

Chapter80 (926879) | more than 3 years ago | (#35479306)

We could easily extend that to

3/14/15 9:26:53 am

And have a real big bash.

You'll be more than a half second early!
Wait a sec, and you'd be more accurate.

Re:Almost there... (2)

the_humeister (922869) | more than 3 years ago | (#35479052)

Unfortunately, it's really 2015-3-14. If prefere e day: 2718-2-8

Re:Almost there... (1)

drb226 (1938360) | more than 3 years ago | (#35479398)

But that and 3141-5-9 are way too far off :P

We can use that date format after e day on 2/7/18

Re:Almost there... (1)

Cogita (1119237) | more than 3 years ago | (#35479404)

Unfortunately, it's really 2015-3-14. If prefere e day: 2718-2-8

Unfortunately, I don't have 700 hundred years to spare, so I'll accept messing with date formats to get to celebrate.

Dates (1)

rossdee (243626) | more than 3 years ago | (#35479334)

Except that 'the world over doesnt use mm/dd/yy

in Commonwealth countries we use dd/mm/yy
in europe they use yyyy/mm/dd

Islamic countries use a completely different calendar

But its less than a week until Naw-Ruz (persian new year
At sunset on 20th March all 'The Friends' can stop fasting

Don't forget to 'wear the green' on the 17th for St Pats day

And it would be cute to 'wear purple' tomorrow (15th) to signify that
"the Ides of March have come'
'Aye Caesar, but not gone'

3/14?? (1)

dzfoo (772245) | more than 3 years ago | (#35478994)

Shouldn't Pi day be the 22th of July?

            -dZ.

2011-03-14 (1)

tepples (727027) | more than 3 years ago | (#35479094)

In ISO 8601 notation, today is 2011-03-14, where the "3.14" is easy to spot. July 22 is 2011-07-22, where the "22/7" is backward.

Re:3/14?? (0)

Anonymous Coward | more than 3 years ago | (#35479102)

that would be pi approximation day

http://en.wikipedia.org/wiki/Pi_Day

Steak and BJ Day (1)

Rik Sweeney (471717) | more than 3 years ago | (#35479002)

Actually, I think you'll find that today is Steak and BJ Day

http://www.steakandbjday.com/ [steakandbjday.com]

Re:Steak and BJ Day (1)

Rik Sweeney (471717) | more than 3 years ago | (#35479074)

Actually, I've just had a better idea

Steak and Pi Day

(Come on, this is /. after all)

Re:Steak and BJ Day (2)

hduff (570443) | more than 3 years ago | (#35479468)

Actually, I've just had a better idea

Steak and Pi Day

(Come on, this is /. after all)

Of course. Slashdotters are not interested in a beej, just math.

interesting note: (4, Interesting)

circletimessquare (444983) | more than 3 years ago | (#35479014)

also albert einstein's birthday

http://en.wikipedia.org/wiki/Albert_Einstein [wikipedia.org]

March 14, 1879

Re:interesting note: (2)

Eevee (535658) | more than 3 years ago | (#35479234)

And White Day [wikipedia.org] , so I'll be stopping on the way home to pick up a treat for my wife.

Re:interesting note: (0)

Anonymous Coward | more than 3 years ago | (#35479320)

Pics of the marriage consummation, hopefully involving cosplay, or we don't believe it.

OMFG, the WV is "baller"... it seems so appropriate...

less interesting note: (1)

jdwoods (89242) | more than 3 years ago | (#35479252)

also albert einstein's birthday

March 14, 1879

And mine, except four score later. :)

Only in America! (3, Interesting)

Gadget_Guy (627405) | more than 3 years ago | (#35479048)

It is only Pi Day if you use the date format of mm/dd. In countries that use dd/mm date format, it lands on 22/7. If you think about it, Pi Day makes more sense in that format.

My subject line says "Only in America", but in reality Basque Country, Hungary, Korea, and Mongolia use mm.dd which makes the more ideal 3.14

Re:Only in America! (0)

Anonymous Coward | more than 3 years ago | (#35479346)

ISO 8601 specifies YYYY-MM-DD, which is really the only sane way to format dates numerically as that's the only way they sort properly.

3/14 is not Pi it's 22/7 (approximately) (-1)

Anonymous Coward | more than 3 years ago | (#35479068)

3/14? meaning 3 divide by 14? That's not Pi.

I guess you meant to say 3.14

belt tightening in the USA (4, Funny)

Anonymous Coward | more than 3 years ago | (#35479070)

In most states, there are no longer separate holidays for pi and e but rather a combined "Transcendentals Day".

"Come on down, our prices for this one day event are just irrational".

The scary part is ... (0)

Anonymous Coward | more than 3 years ago | (#35479092)

... that I actually found it funny. Damn I am a geek!!

Americans... (-1, Redundant)

ledow (319597) | more than 3 years ago | (#35479106)

Come the 31st of April (31st of the 4th), or possible even the 22nd of July (22/7) I will be glad to celebrate a Pi day as expected (i.e. not care, despite being a mathematician and despite having spent YEARS in the past writing programs and algorithms to approximate pi).

I honestly do not understand why the mm/dd/yyyy format EVER caught on over there. You can't sort by date either way without having to "rearrange" the order of the columns and who ever sorts by month before day? Even if you wanted to start all the January invoices, etc. it's still infinitely more sensible to sort in reverse (yyyy/mm/dd) in order to handle that and avoid mistakes.

YYYY-MM-DD-HH-MM-SS-mm. Name your date-ordered files like that and you can't go wrong (oldest files will appear at the top, newest at the bottom, rathee than having all the January's, then all the February's etc.). Notice how EVERYTHING is in descending order.

What exactly is the reasoning behind putting the MONTH as the most important factor of a date?

Re:Americans... (0)

Anonymous Coward | more than 3 years ago | (#35479214)

We write it the same way we say it.

March 14th becomes 3-14. I agree that it makes little numerical sense, but the whole numbered month transition is fairly arbitrary anyway, and computers are already so much better at ordering than humans that who cares if it's a little harder for the computer to order.

Re:Americans... (3, Informative)

Bake (2609) | more than 3 years ago | (#35479238)

I wouldn't hold my breath for 31st of April.

Re:Americans... (0)

Anonymous Coward | more than 3 years ago | (#35479294)

Mod parent up!

Re:Americans... (0)

Anonymous Coward | more than 3 years ago | (#35479464)

It's only a month and a half away, isn't it? ;)

Re:Americans... (1)

ari_j (90255) | more than 3 years ago | (#35479264)

It comes from saying "March 14, 2011" in formal writing and oral communication. 3/14/11 is an informal abbreviation of that, and is in that order because it comports with how the formal, unabbreviated version is written. In other words, the purpose for which dates were abbreviated results in the manner in which they were abbreviated. Computerized sorting by date was not a consideration when this date format came into standard use.

I don't know why we say "March 14, 2011" instead of "14 March, 2011", but as a native speaker of American English it does feel much more natural to say the former. There is probably a history behind that but it, too, had no reason to take into consideration computerized sorting.

Pi-baking time! (1)

adosch (1397357) | more than 3 years ago | (#35479146)

I'm going to get my '3.14' on and bake myself something in a circular tin. Maybe pumpkin or apple! (it gives me a good excuse to, anyways)

Re:Pi-baking time! (0)

Anonymous Coward | more than 3 years ago | (#35479380)

Pie R Square?
NO
Pie R Round.

Significant Other (1)

Mirey (1324435) | more than 3 years ago | (#35479272)

Although Pi day is great and all, I prefer the "Steak and bj" aspect of 14/3 more.

Einstein's birthday (0)

Anonymous Coward | more than 3 years ago | (#35479366)

It's also Einstein's birthday.

Tau instead of Pi... Wait a few months (5, Informative)

HizookRobotics (1722346) | more than 3 years ago | (#35479418)

I too was once an ardent pi supporter. However, I have seen the light... let us eliminate spurious factors of two everywhere and embrace a more reasonable transcendental number: tau [tauday.com]

pi is wrong (0)

Anonymous Coward | more than 3 years ago | (#35479420)

no really.

http://tauday.com/

Ultimate Pi Moment (3, Interesting)

Chas (5144) | more than 3 years ago | (#35479520)

Waiting for 3/14/15 at 9:26 AM.

Just before it flips to 9:27 we'll have an ultimate Pi moment.

Wait until 2015 (0)

Anonymous Coward | more than 3 years ago | (#35479542)

Is there going to be any special celebration in 2015 when instead of being just any old 3/14, it's 3/14/15?

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