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Welcome to the Geohashing Wiki. Geohashing was brought to you by the xkcd webcomic. Read this information in 
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| “ | Okay, if you don't hear back from me in two hours, call the police and tell them to look for me approximately at the 50 10 geohash of the day.
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| find some more great geohashing quotations here. | —Mampfred on the phone with his wife after dark at 2010-10-18_50_10
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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
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More pages needing discussion --- 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 Saturday meetups on 19 May 2012 are now available. The coordinates for the next Saturday meetups, scheduled for 26 May 2012, will be based on the Dow’s opening price published at 09:30 EDT (13:30 UTC) on Friday 25 May. See timeanddate.com to convert this time to your local time zone.
- Coordinates: Mon 21 May* | Sun 20 May | Sat 19 May | Fri 18 May | Thu 17 May | Wed 16 May | Tue 15 May | Mon 14 May
* Only known for regions east of 30W longitude. Coordinates for regions to the west announced 13:30 UTC, 21 May. - View expedition archives for: May 2012 | April 2012 | March 2012 | More...
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 | |||||||||
