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Welcome to the Geohashing Wiki. Geohashing was brought to you by the xkcd webcomic.

“	Geohashing takes you places. In my case to a place where a rainbow appeared while I was already taking pictures for a panorama. I doubt that the same thing will happen to me a second time. Thank you, Randall.		”
find some more great geohashing quotations here.		—Hermann, commenting on 2013-09-16 53 9.

Warning! Due to a retrieval malfunction which is probably a result of an unexpected change of the google finance page, the peeron map and the wiki currently use an old DJIA instead of the new one, and therefore show wrong coordinates for tuesday, 2009-08-18 (west of 30W) and wednesday, 2009-08-19 (east of 30W). The correct fractions for these days will not be available before 13:30 UTC, and might only get available from other tools in the beginning.

• Tuesday 2009-08-18, west of 30W: n/a
• Wednesday 2009-08-19, east of 30W: n/a

Sorry for the inconvenience.

What is this?

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

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

How to geohash:

• Beginner's guide - start here
• Guidelines to follow
• Frequently asked questions
• Map applications that may help you get there
• Geohashing guides on various topics

Other people's expeditions:

• geohashing.win - browse all expeditions on a map
• Hall of Amazingness
• Maps and statistics

Get involved

• Find a geohash using a coordinate calculator
• Find others in your local area
• Chat on Discord or IRC #geohashing chat on slashnet (web interface)
• Create your user page and become a part of the community!

news archive • Edit What's new on the wiki?

• 2024-05-17 The Democracy achievement has been added.
• 2024-05-15 The Skate geohash achievement has been added.
• 2024-05-13 The Climb achievement has been added.
• 2024-05-01 The most active graticule for 2024-04 was 52,7.
• 2024-04-27 The Eclipse achievement has been added.
• 2024-04-02 The renaming process for the MNIMB, MNB, and Virgin Graticule achievements/consolation prizes is ongoing.

More pages needing discussion • Discussion archive • Edit Now discussing - please join in: 

• Make sure to check out and give your thoughts on the Proposed achievements!
• For more general discussions, find us here:
  • IRC: #geohashing on irc.slashnet.org
  • Discord: discord.gg/BvRfGat

Official xkcd meetups

Felix Dance, Mdixon4, Rhonda, Lachie and Stevage meet up at the 28 December 2015 (a Monday) coordinates for Bairnsdale, VIC, Australia.

Based on the title text from the comic that established geohashing, the "official" meetup day was interpreted as being Saturday; that is, the day one would have the best chance of meeting others -- see also Mouseover Day. Additionally it was decided through convention that a good meeting time would be 16:00 local time (4:00 P.M.)¹

However, neither of these are hard rules, and they were formulated at a very different early stage in the sport's history. Nowadays and for quite awhile actually, any date or time can be good (or bad, depending on how many other hashers are near you) for meeting up, especially if prearranged. Note that this only applies to that day’s normal local geohash or globalhash coordinates, if you try to go to an alternate location without telling anyone else, it's highly unlikely you'd meet up with a hasher there (obviously).

¹Or earlier if that would be too close to sunset during the winter, or other quirks of temporal tradition; see your local graticule page for consensus there.

Recent and Upcoming Coordinates

The coordinates for the Saturday meetups on 18 May 2024 are now available. The coordinates for the next Saturday meetups, scheduled for 25 May 2024, will be based on the Dow's opening price published at 09:30 EDT (13:30 UTC) on Friday 24 May. See timeanddate.com to convert this time to your local time zone.

• Coordinates: Mon 20 May* | Sun 19 May | Sat 18 May | Fri 17 May | Thu 16 May | Wed 15 May | Tue 14 May | Mon 13 May
  * Only known for regions east of 30W longitude. Coordinates for regions to the west announced 13:30 UTC, 20 May.
• View expedition archives for: May 2024 | April 2024 | March 2024 | More...
• Refresh the cache

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.

Sat 18 May 2024 add

Fri 17 May 2024 add

Petersfeld, Germany

Thu 16 May 2024 add

Wed 15 May 2024 add

Somers, Australia

Venne, Germany