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Welcome to the Geohashing Wiki. Geohashing was brought to you by the xkcd webcomic. Read this information in Flag of Germany.png Deutsch - Flag of Spain.png Flag of Mexico.png Flag of Chile.png Español - Flag of France.png Français - 800px-Flag of Sweden.png Svenska - and maybe other languages.

12:25 - What the hell... Edit conflict? Pari!
find some more great geohashing quotations here.
davidc on Pari, who were both live editing the wiki during the expedition

What is this?

The Algorithm as shown in xkcd comic #426, published on 21 May 2008.

Geohashing is an adventure, comprising journeys to random places within a given area. Every day, effectively random locations are generated by an algorithm that achieves randomness using stock market data. It is a Spontaneous Adventure Generator. A set of coordinates is generated for each 1°×1° latitude/longitude zone (known as a graticule) in the world. The coordinates can lie anywhere in the graticule — in the forest, in a city, on a mountain, or even in the middle of a lake! Everyone in a given region gets the same set of coordinates relative to their graticule.

The generated coordinates are used as destinations for adventures, à la Geocaching, or for local meetups. After the fun, please document your expedition! The rest of us would love to read your story, see your photos, and cheer your success (or commiserate with your failure). You can use this wiki to document the daily coordinates (geohashes) you’ve been to or tried to reach.

Learn more Get involved


news archive What's new on the wiki
  • 2014-09-21 The expeditions and grat pages are generally broken. Folks are working on them. See WikiProblems. Would anyone object if Joannac tried upgrading MediaWiki?
  • 2013-08-20 Get the coordinates on twitter.
  • 2013-05-04 Check out the new Geohashing Poster Tool.
More pages needing discussion --- Discussion archive Now discussing - please join in: 
  • A proposal to identify users who are willing to be advocates/mentors for geohashing.
  • We are almost always discussing in the Geohashing IRC channel: Join us in #geohashing on irc.foonetic.net

Official xkcd meetups

Rhonda, Robyn and Wade at the 25 April 2009 coordinates for Vancouver, BC, Canada

Official xkcd meetups happen every Saturday afternoon at 4:00 p.m.(*) at that day’s normal geohash coordinates. It is considered a Saturday meetup if you are there at 4:00 p.m. or if you meet people, but you are most likely to encounter other readers of xkcd if you go at the designated time. Bring games!

You're encouraged to geohash on any day of the week that the coordinates are accessible to you, but if you attempt one meetup all week, make a little extra effort to have it be on Saturday. All meetups start at 4:00 p.m. or as designated on the graticule page.

There's even an achievement for making it to 100 Saturday meetups.

*In some areas, 4:00pm is too close to sunset during the winter, so earlier meetups are often more appropriate. See individual graticule pages for local conventions.


Recent and Upcoming Coordinates

The coordinates for the next Saturday meetups, scheduled for 29 November 2014, will be based on the Dow’s opening price published at 09:30 EST (14:30 UTC) on Friday 28 November. See timeanddate.com to convert this time to your local time zone.

Disclaimer: When any coordinates generated by the Geohashing algorithm fall within a dangerous area, are inaccessible, or would require illegal trespass, DO NOT attempt to reach them. Please research each potential location before attempting to access it. You are expected to use proper judgment in all cases and are solely responsible for your own actions. See more guidelines.

Gallery of Recent Expeditions

The gallery for each day is added to this page automatically, but pictures are selected to the gallery by us. Any geohasher is welcome to add a picture from that day. Just add your image name in the list at the “add yours” link. If the gallery hasn't been started yet, copy the format from the previous day, or read the how-to. Please also write an account of your expedition, even if only a short one, so that people can click the link on your picture and find out more.

Click here to learn how to add your own expedition pictures.

If your newly added expedition does not show, click here to refresh the cache

Click here to see an automatic list of all recent expeditions, whether pictures were posted or not.

Recent Expeditions

Recent non-expeditions

This section documents hash expeditions that geohashers wish they could make, but have not been able to for the reasons stated.

2014

  • 2014-11-26 global In a farmer's field, about 10km south of Tal Abyad (Arabic: تل أبيض‎ Tal Abyaḍ; Kurdish: Girê Sipî), a Syrian town located along the Balikh River within the Ar-Raqqah Governorate, and a further 2km from Akçakale in Turkey. Apart from the farmers, this might be a troubled place to be. 1PE (Canberra) (talk) 17:01, 25 November 2014 (EST)
  • 2014-09-23 global In the coastal national park/forest about 15km north-east of Bintulu, in Sarawak, East Malaysia. It's only several hundred metres from the palm oil plantation roads. Bintulu has the largest single gas manufacturing complex in the world, with a significant 'expatriate' population, so there are potentially many nerdy geohashers.1PE (Canberra) (talk) 21:42, 22 September 2014 (EDT)
  • 2014-08-29 31 35 Drive or walk along the mostly deserted (no buildings) Kadish Luz Street, West Jerusalem. The hash is beside a pipe access cover. 1PE (Canberra) (talk) 23:49, 28 August 2014 (EDT)
  • 2014-08-29 global An easy walk from a road in the western United States. Unfortunately, it's in Montana, and I have commitments in California, so I couldn't make it there in time for midnight even if I had a car at hand. Codae (talk)
  • 2014-08-27 28 77 In the outskirts of Delhi, India, at the rear of an upmarket country estate house in the Dera Mandi district. I'd love to knock on that door./gate.1PE (Canberra) (talk) 00:16, 27 August 2014 (EDT)
  • 2014-04-30 49 -2 This was pretty much on the beach, on the island of Sark! It's unusual enough for the Channel Islands to be hit at all, but a beach (or small boat) hash on Sark is something else. Wish I could have been there. Macronencer (talk) 08:10, 2 May 2014 (EDT)
  • 2014-02-18 52 4 THE place to waste your time [1] On the dock of the bay no less. But, the restricted part of the naval base. JwB (talk)09:52, 18 February 2014 (CET)
  • 2014-01-30 Global Hash [2] 28N 126E South China Sea, north-west of Okinawa. I have a friend sailing through this area at the moment, about 240km South East so perhaps two days sail from this GH. However, there is no chance of 'diverting' him today. Hence, no chance of various achievements (he is capable of navigating by compass AND sextant, has a cat onboard the yacht to pat, etc.) A pity! 1PE (Canberra) (talk) 17:30, 29 January 2014 (EST)
  • 2014-01-11 -34 149 [3] ON the south-bound track of a bendy bit of the Melbourne, Australia to Sydney, Australia main train line, near Gunning, New South Wales (west of / in the graticule of Goulburn, Australia) -- SOMEONE must be on a train! 1PE (Canberra) (talk) 18:09, 10 January 2014 (EST)

2013

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