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From Geo Hashing
Welcome to the Geohashing Wiki. Geohashing was brought to you by the xkcd webcomic. Read this information in 
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| “ | See, two weird looking young men, are sitting on somebody's roof maybe a 100 meters away from a military base, have no explanation of what they are doing there ("uh, well, we picked a random spot and went there, officer, honest!"), and one has a hat with a communist star. Right. Not suspicious in the least.
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| find some more great geohashing quotations here. | —Superbest, describing the strategic retreat to the roof of a stranger's house for the night.
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What is this?
Geohashing is a method for finding an effectively random location nearby and visiting it: a Spontaneous Adventure Generator. Every day, the algorithm generates a new set of coordinates for each 1°×1° latitude/longitude zone (known as a graticule) in the world. The coordinates can be anywhere -- 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.
As such, these coordinates can be 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
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news archive What's new on the wiki
| discussion archive Now discussing - please join in
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Official xkcd meetups
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 13 February 2010, will be based on the Dow’s opening price published at 09:30 EST (14:30 UTC) on Friday 12 February. See timeanddate.com to convert this time to your local time zone.
- Coordinates: Wed 10 Feb* | Tue 9 Feb | Mon 8 Feb | Sun 7 Feb | Sat 6 Feb | Fri 5 Feb | Thu 4 Feb | Wed 3 Feb
* Only known for regions east of 30W longitude. Coordinates for regions to the west announced 14:30 UTC, 10 February. - View expedition archives for: February 2010 | January 2010 | December 2009 | More...
- Refresh the cache
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.
| Start the gallery for Tuesday 9 February. (how?) |
