Geohashing

Posted on May 21, 2008 by xkcd

Summer seems to have arrived, at last.

As you may have noticed, today’s comic contains an algorithm for converting dates into local coordinates. For a given day, you can calculate what that day’s coordinate is for your region. Dan has put together a tool for calculating a day’s coordinates and show it using Google Maps. Note that you can’t calculate a day’s coordinates before the stock market opens on that day (about 9:00 EST) — except for weekends and holidays, when it uses the most recent opening price.

We’ve been having fun trying to reach these coordinates for some time now, when the coordinate is reachable — that is, when it’s not over water, in a military base, or in the middle of Bill Gates’s house.

If you happen to be looking for somewhere to go, driving to the coordinates can be an adventure. If you do, please take pictures and drop them on the geohashing wiki (feel free to help fill it out). I’m gonna get some rest and then, at 10 AM tomorrow, see if I can get to the Boston coordinates (I have no way of knowing where they’ll be until then, of course).

And finally, when the coordinates are reachable, meetups are Saturday afternoon at 4:00.

Edit: I answered a bunch of questions in a comment below. Further discussion is also happening on the wiki. I’m going to get some sleep and then head out to today’s coordinates (or as close as I can get).

474 thoughts on “Geohashing”

Atasehir Cilingir on January 15, 2013 at 6:55 am said:

Ataşehir Çilingir
panax on January 18, 2013 at 6:38 am said:

efrvul su tesisatçısı servisi , su kaçağı tespiti , robotla tıkanılık açma , makineyle petek temizliği yapıyrf
ukash on January 31, 2013 at 2:30 pm said:

Nice post posted by the author admin.
yandexb@yahoo.com on February 3, 2013 at 10:40 pm said:

Thank you post admin.
evden eve nakliyat on February 3, 2013 at 10:41 pm said:

Thank you post admin. Veri nice
kombi temizliği on February 9, 2013 at 5:07 am said:

kombi temizliğini itane ile makinelerimizle yapıyoruz beni ara arkdaş ara .
nzt 48 on February 17, 2013 at 7:43 am said:

feost posted by the authewrf!
oyun on February 25, 2013 at 8:54 am said:

Thank you post admin.
evden eve nakliyat on February 25, 2013 at 1:48 pm said:

evden eve taşıma , evden eve nakliye
elektrikçi on March 4, 2013 at 8:08 am said:

elektrikçi servisi veriyoruz istanbulun her yerine .
kombi temizliği on March 4, 2013 at 8:09 am said:

istanbul kombi petek temizliği servisi .
su kaçağı nasıl bulunur on March 4, 2013 at 8:10 am said:

su kaçağı nasıl bulunur cevabı burda :=)
boyacı on March 4, 2013 at 8:12 am said:

istanbul boya badana servisi .
Emrah on March 15, 2013 at 3:37 pm said:

çok begendim
Akasya on March 23, 2013 at 9:54 am said:

Ev Taşıma Hizmetleri
evdenevenakliyatt on March 23, 2013 at 9:55 am said:

bilgilerineze arz ederim saolun
yıldırım on March 23, 2013 at 9:57 am said:

beylikdüzü nakliyat
http://www.sehirlerarasinakliyat.web.tr
Desi Alarm on March 26, 2013 at 11:21 am said:

Desi Alarm Ürünlerinde İndirim!
samsun satılık daireler on March 31, 2013 at 9:13 am said:

Bill Gates House is how accurate the coordinates that I think People will wonder how the House can be a problem., how what’s on the wall, bath decor, do you have a Jacuzzi with milk.
ares indir on April 1, 2013 at 6:26 am said:

ares indir
nakliyat on April 27, 2013 at 11:28 am said:

evden eve nakliyat çok güzel bir site
nakliyat on April 27, 2013 at 11:29 am said:

evden eve taşimacılık
Gudden on May 6, 2013 at 8:29 am said:

istanbul boya badana servisi .
kibarlı panax on May 11, 2013 at 3:23 am said:

Mustafa Eraslan’dan Kibarlı Panax

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