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Welcome to the Geohashing Wiki. Geohashing was brought to you by the xkcd webcomic. Read this information in Deutsch - Español - Français - Svenska - and maybe other languages.

“	"I've washed off the dried blood, emptied my pockets of twigs and pine park fragments and showered the resinous detritus out of my hair."		”
find some more great geohashing quotations here.		—Sourcerer in Wales

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

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?

• 2024-12-01 The most active graticule for 2024-11 was 42,-78.

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 next Saturday meetups, scheduled for 21 December 2024, will be based on the Dow’s opening price published at 09:30 EST (14:30 UTC) on Friday 20 December. See timeanddate.com to convert this time to your local time zone.

• Coordinates: Wed 18 Dec* | Tue 17 Dec | Mon 16 Dec | Sun 15 Dec | Sat 14 Dec | Fri 13 Dec | Thu 12 Dec | Wed 11 Dec
  * Only known for regions east of 30W longitude. Coordinates for regions to the west announced 14:30 UTC, 18 December.
• View expedition archives for: December 2024 | November 2024 | October 2024 | More...

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

Wed 18 Dec 2024 add   Tue 17 Dec 2024 add   Yallourn, Australia   Mon 16 Dec 2024 add   Sun 15 Dec 2024 add   Sat 14 Dec 2024 add   Inverloch, Australia   Fri 13 Dec 2024 add   Unter-Widdersheim, Germany   Thu 12 Dec 2024 add   Zorneding, Germany   Kampe, Germany   Bremen-Schwachhausen, Germany   Wed 11 Dec 2024 add   Roseville, MN, USA   Tue 10 Dec 2024 add   Deloraine, Australia   Attenkirchen, Germany   Winterthur, Switzerland   Mon 9 Dec 2024 add   Bochum-Riemke, Germany   Sun 8 Dec 2024 add   Sat 7 Dec 2024 add   Dardenhall, Scotland   Fri 6 Dec 2024 add   Thu 5 Dec 2024 add

Recent non-expeditions

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

2013

• 2013-03-20 33 72 (GlobalHash) by 1PE - Western side of the Indus River valley, about 25km south of Nowshera, Pakistan; only 60km from Pashawar.
• 2013-03-15 -34 149 by 1PE - very near an interesting Google Maps feature, an aircraft pictured in flight but I couldn't justify going 70km each way to the hash.