# Pi Day, Pi Minute, or Pi Second?

In this challenge you will need to determine whether it's Pi Day, Pi Minute, or Pi Second.

Because Pi is irrational, it wants your code to be as short as possible.

# Examples

No input is provided, your program should use the system time. I've just added it for clarity

March 14, 2016 0:00:00
Pi Day
December 25, 2015 3:14:45
Pi Minute
December 29, 2015 0:03:14
Pi Second
January 1, 2016 0:00:00
<No Output>


## What is Pi Day / Minute / Second

• Pi Day is when the month is March, and the date is the 14th
• Pi Minute is when the hour is 3, and the minute is 14
• Pi Second is when the minute is 3, and the second is 14
• Pi Day should be preferred instead of Pi Minute or Pi Second, and Pi Minute should be preferred instead of Pi Second.
• For this challenge you should use 12-hour time (15:14 == 3:14). The date/time used to determine the Pi Day/Minute/Second should be based on system time.

## Scoring & Bonus

-15 byte Bonus: If you print "No Pi Time" when it's not Pi time.

As always, standard loopholes are disallowed. This is shortest code in bytes wins!

• I don't think Costco allows you to purchase the mathematical constant pi at any time of the year. – Alex A. Jan 2 '16 at 1:35
• You've changed it to regular pie. That's also false because you can get pie from Costco all year. – Alex A. Jan 2 '16 at 1:39
• @AlexA. Hmm, weird I can never find it in the summer... – Downgoat Jan 2 '16 at 1:40
• Because pi is infinitely long and you want to be passive-aggressive? – Arcturus Jan 2 '16 at 1:53
• I went to Costco today - they were closed. – Digital Trauma Jan 2 '16 at 5:18

## CJam, 41 bytes

et[3E]#"
Pi Day

Pi Minute
Pi Second
"N/=


Test it here. Alternatively use this link to stub the result of et for easier testing.

### Explanation

et   e# Get the current datetime as an array with the following elements:
e#   - Year
e#   - Month
e#   - Day
e#   - Hour
e#   - Minute
e#   - Second
e#   - Millisecond
e#   - Weekday
e#   - Tickrate or something.
[3E] e# Push the array [3 14].
#    e# Find the position of this subarray in the current datetime array. Let's see
e# what results we can get:
e#   - Year 3 is in the past and there is no 14th month, so we can't get 0.
e#   - Pi day will give result 1.
e#   - Day 3, hour 14 would give 2.
e#   - Pi minute will give result 3.
e#   - Pi second will give result 4.
e#   - Second 3, millisecond 14 would give 5.
e#   - Weekday and tickrate won't be 14, so we'll never get 6 or 7.
e#   - If [3 14] isn't found at all we get -1.
"\Pi Day\\Pi Minute\Pi Second\"
e# Push this string (with linefeeds instead of backslashes.
N/   e# Split into lines.
=    e# Select the corresponding element. The non-existent "pi hour" and "pi millisecond"
e# would map to empty strings as well as the -1.


# Javascript (ES6), 114 112 - 15 = 97 bytes

x=>['Pi Day','Pi Minute','Pi Second'].find((x,i)=>[/ar 14/,/(03|15):14:/,/03:14/][i].test(Date()))||'No Pi Time'


Ungolfed:

x=>
['Pi Day', 'Pi Minute', 'Pi Second']  // array of outputs
.find(                                // find first element in the array
(x, i)=>                          // which returns truthy for this function
[/ar 14/, /(03|15):14:/, /03:14/] // array of regex patterns
[i]                               // get corresponding regex based on index
.test(Date())                     // test it against current date, date is automatically cast to string
) || 'No Pi Time'                     // if no result, then return "No Pi Time"


Thanks for -2 bytes @edc65

• Could be Date() instead of new Date – edc65 Jan 2 '16 at 10:56
• 'Pi '+['Day','Minute','Second'].find((x,i)=>................ – wizzwizz4 Jan 3 '16 at 9:13
• @wizzwizz4 this won't work. If it's not Pi time, it returns "Pi undefined" – nderscore Jan 3 '16 at 17:04
• Would a check for undefined be shorter than 6 chars? – wizzwizz4 Jan 3 '16 at 17:39
• @nderscore It's fewer bytes to say nderscore than underscore. – wizzwizz4 Jan 3 '16 at 18:26

## Ruby, 125 124 chars

i=[*[(t=Time.new).month,t.day,t.hour,t.min,t.sec].each_cons(2)].index [3,14];i&&$><<['Pi Day','','Pi Minute','Pi Second'][i]  Alas, the cleverer %i[month day hour min sec].map{|x|Time.new.send x} is longer. The key here is the use of each_cons to avoid repetition (see the last few lines of the explanation below). i= # send i (index) to... [* # convert to array (splat)... [ (t=Time.new).month, # the current month... t.day,t.hour,t.min,t.sec # etc... (duh) ] .each_cons(2) # each consecutive two elements ] # [[month, day], [day, hour], [hour, min], etc] .index [3,14]; # first occurrence of [3, 14] i&& # shorthand for "if i"...$><<                        # output...
[
'Pi Day',                  # [month=3, day=14] is Pi Day
'',                        # [day=3, hour=14] isn't anything
'Pi Minute',               # [hour=3, min=14] is Pi Minute
'Pi Second'                # [min=3, sec=14] is Pi Second
][i]                        # index by index (obviously)

• You could save a few chars by pulling out 'Pi' like you did with t, no? – Cole Johnson Jan 2 '16 at 6:07
• @Cole And what will you do with the second element? – nicael Jan 2 '16 at 14:21
• Why isn't Pi Hour anything. What's wrong with 2 in the afternoon, tomorrow? – Mr Lister Jan 2 '16 at 14:31
• @ColeJohnson No, [(p='Pi ')+Day','',p+'Minute',p+'Second'] is longer. – Doorknob Jan 2 '16 at 16:17

## Python 2, 219186 183 Bytes (198-15)

I tried

Ungolfed:

from datetime import datetime

now = datetime.now()
output = ['Pi Day', 'Pi Minute', 'Pi Second', 'No Pi Time']

if now.month == 3 and now.day == 14:
print output[0]
elif now.hour == 2 and now.minute == 13:
print output[1]
elif now.minute = 2 and now.second == 13:
print output[2]
else:
print output[3]


Golfed:

from datetime import *
n=datetime.now()
a=n.minute
if n.month==3and n.day==14:print'Pi Day'
elif n.hour==2and a==13:print'Pi Minute'
elif a==2and n.second==13:print'Pi Second'
else:print'No Pi Time'

• from datetime import*;n=datetime.now() is shorter. Also, there's no point in indexing into an array when you're printing constant strings. – Doorknob Jan 2 '16 at 1:29
• @Doorknob冰 That's true :) – Zizouz212 Jan 2 '16 at 1:36
• Shorter even: paste.ee/p/ebcSh – Rɪᴋᴇʀ Jan 2 '16 at 1:40
• Made by swapping if/elses with [else,if][statement]. – Rɪᴋᴇʀ Jan 2 '16 at 1:41
• The latter numbers are wrong (2:13 instead of 3:14), and the 12-hour clock requirement isn't met. (Seems to apply to some other answers too) You can also get it shorter by indexing the result of time.localtime(); it comes down to 148-15 bytes (without the 12-hour fix). The 12-hour thing is unfortunate though; without it you could easily get it down to 129-15 bytes: import time;x=3,14;T=time.localtime();print{1:'Pi Day',3:'Pi Minute',4:'Pi Second'}.get((zip(T,T[1:])+[x]).index(x),'No Pi Time') (and 118-15 bytes on Python 3, by converting to bytes and using find, which makes things simpler) – Aleksi Torhamo Jan 2 '16 at 3:49

## Japt, 78 - 15 = 63 bytes

D=Ð)g ¥3©Df ¥E?"Pi Day":Dd %C¥3©Dc ¥E?Pi M©e:Dc ¥3©Db ¥E?Pi SeÖ:No Pi Te


Pretty straightforward - just checks the date for every case.

Explanation:

• D=Ð)g get the current date (Ð), store it in the variable D and get the month (g). Why store it in the variable, if it's already one-letter? Because since then you can dress any part of date with Da, where a is the function, returning year, month, date, etc. But otherwise you'd have to do Ð a, see the space.

• ¥3 is ==3, checking if the month is March.

• © is &&, i.e. "and".
• Df is the day of the month.
• E is 14
• ?...:... - typical sets of ternary operators
• Dd %C the reminder of dividing the hour (Dd) by 12 (C)
• Dc is the minutes
• Db are seconds

Try it online!

To emulate Pi Day:

D=Ð"3/14/11 11:11:11";
Dg ¥2©Df ¥E?"Pi Day":Dd %C¥3©Dc ¥E?Pi M©e:Dc ¥3©Db ¥E?Pi SeÖ:No Pi Te

D=Ð"11/11/11 3:14:11";
Dg ¥2©Df ¥E?"Pi Day":Dd %C¥3©Dc ¥E?Pi M©e:Dc ¥3©Db ¥E?Pi SeÖ:No Pi Te

D=Ð"11/11/11 00:3:14";
Dg ¥2©Df ¥E?"Pi Day":Dd %C¥3©Dc ¥E?Pi M©e:Dc ¥3©Db ¥E?Pi SeÖ:No Pi Te


# TI-BASIC, 124 bytes

Thanks to FlagAsSpam for shaving a few bytes.

"→Str1
getTime
If min({3,14}={Ans(2),Ans(3
"Pi Second→Str1
getTime
If Ans(2)=14 and max(Ans(1)={3,14
"Pi Minute→Str1
getDate
If min({3,14}={Ans(2),Ans(3)
"Pi Day→Str1
Str1

• Are you using i (imaginary unit) and e (Euler's constant) as shortcuts? If not, that could also save you some bytes. – Addison Crump Jan 2 '16 at 19:30
• @FlagAsSpam I thought about using those, but I wasn't sure if it counts. – Conor O'Brien Jan 2 '16 at 19:39
• @FlagAsSpam Whether or not they're valid here, e is actually two bytes! – lirtosiast Jan 2 '16 at 21:37
• @ThomasKwa Oh, right. – Conor O'Brien Jan 2 '16 at 21:39
• @FlagAsSpam It is no longer invalid. ^_^ – Conor O'Brien Jan 2 '16 at 23:26

# Perl, 80 - 15 = 65 bytes

print'No 'x localtime!~/(ar | 15:|03:)14/,'Pi ',(Time,Day,Minute,Second)["@-"/4]


Take 2, parsing the string representation of localtime. At present, this looks something like this:

Sun Jan  3 15:14:15 2016


The position of the matched string is used to determine the correct Pi Time.

### Perl, 100 bytes

@t=localtime;$t[2]%=12;3-/3/^{@t[$_,$_+1]}->{14}||exit!print'Pi ',(Second,Minute,_,Day)[$_]for 3,1,0


localtime returns the months zero indexed, hence the need for 3-/3/.

# Python 3, 137 - 15 = 122 bytes

import time
T=list(time.localtime())
T[3]%=12
print({1:'Pi Day',3:'Pi Minute',4:'Pi Second'}.get(bytes(T[1:6]).find(b'\x03\x0e'),'No Pi Time'))


The 12-hour requirement was unfortunate, as this would've been 118-15=103 bytes without it:

import time
print({1:'Pi Day',3:'Pi Minute',4:'Pi Second'}.get(bytes(time.localtime()[1:6]).find(b'\x03\x0e'),'No Pi Time'))


# AppleScript, 202190187183 181 bytes

Hey, this isn't so bad after all.

set n to current date
set b to n's time string
if n's date string contains"March 14"
log"Pi Day"
else if b contains"3:14:"
log"Pi Minute"
else if b contains"3:14"
log"Pi Second"
end

I actually found a use for AppleScript's method calling. Go figure. Nope. Just turns out that I'm an idiot. Setting a variable is shorter.

(for those wondering, current date command returns a date-type with the contents "Saturday, January 2, 2016 at 2:46:01 PM" or the like)

# PHP, 85 - 15 = 70 bytes

<?=['No Pi Time','Pi Day','Pi Minute','Pi Second'][strpos(@date(Ymdhi_is),'0314')/4];


The main trick use here is the Ymdhi_is date format, at the time of writing, date('Ymdhi_is') returns 201501030258_5828.

• md, hi and is are the values who will be replaced by 0314 if it's Pi-something. Note that all those strings will be always be replaced by a 4-character long string.
• They are put in that specific order since strpos will stop searching at the first occurrence of the needle, so we put them in the order of priority.
• A separator between hi and is is necessary because we don't want strpos to match a value that would overlap both (thanks to primo for saving bytes here).
• The needle is 0314 because 314 would wrongly match 10:31:42 as Pi-Second.

The Y part is the trickiest. We need a prefix to to offset the first occurrence of Pi-something, allowing us to distinguish strpos's return values between false (not found, Pi-nothing) and 0 (found at index 0, Pi-day).

And we want this prefix to be either 4 or 5-character long, since we are planning to divide strpos's return value by 4.

Y is 4-character long, but:

• it will be 5-character long someday, and this will break the program (think about year 10314): the PHP documentation says that Y will be replaced by 4 digits, but it's not true.
• if you come back in time, at year 314, it will break the program.

Since PHP didn't exist in year 314, and will likely not exist anymore in year 10314, I guess these bugs can be safely ignored.

Note that 0314 can overlap Ymd since:

• Ymmd configuration: there's no 31st month.
• YYmm configuration: there's no 14th month.
• YYYm configuration: there are less than 40 months.

Also, there's a version without the bugs related to the year, which is 86 - 15 = 71 bytes:

<?=['No Pi Time','Pi Day','Pi Minute','Pi Second'][strpos(@date(D_mdhi_is),'0314')/4];

• Great answer. If you use underscores rather than dots, you can drop the quotes around Ymd_hi_is. Also, I don't think a separator is necessary between md and hi, as the 12-hour h can never be 14, and never start with 3 or 4. – primo Jan 3 '16 at 7:02

# Python 3, 179 bytes

import functools as F,datetime as D
T,G=D.datetime.now(),getattr
F.reduce(lambda i,j:print("Pi "+i.title())if G(T,i)/G(T,j)==3/14else j,"month day hour minute second".split(" "))