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“	I left the bicycle at the roadside 400 metres from the point and continued on foot. I quickly noticed that I was walking into a swarm of about a million mosquitoes. –– [After reaching the geohash] I took another, slightly more accessible route back to the bicycle and began to cycle back towards the major road. The swarm of mosquitoes still followed me for half a kilometre until I could reach level road and accelerate away from them.		”
find some more great geohashing quotations here.		—Kripakko on 2019-06-07 63 29

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?

• 2024-11-08 Taiwan had its first successful geohash!
• 2024-11-01 The most active graticule for 2024-10 was 48,11.

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 23 November 2024, will be based on the Dow’s opening price published at 09:30 EST (14:30 UTC) on Friday 22 November. See timeanddate.com to convert this time to your local time zone.

• Coordinates: Fri 22 Nov* | Thu 21 Nov | Wed 20 Nov | Tue 19 Nov | Mon 18 Nov | Sun 17 Nov | Sat 16 Nov | Fri 15 Nov
  * Only known for regions east of 30W longitude. Coordinates for regions to the west announced 14:30 UTC, 22 November.
• View expedition archives for: November 2024 | October 2024 | September 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

Thu 21 Nov 2024 add   Wed 20 Nov 2024 add   Darmstadt, Hesse, Germany   Waltham, MN, USA   Tue 19 Nov 2024 add   Truganina, Australia   Mon 18 Nov 2024 add   Sun 17 Nov 2024 add   Sat 16 Nov 2024 add   Eagan, MN, USA   Middlebury, NY, USA   Fri 15 Nov 2024 add   Bearsden, Scotland   Edinburgh, Scotland   Westerveld, Netherlands   Niagara Falls, NY, USA   Thu 14 Nov 2024 add   Orchard Park, NY, USA   Wed 13 Nov 2024 add   Cheektowaga, NY, USA   Tue 12 Nov 2024 add   Hudson, WI, USA   Kfar Truman, Israel   Amherst, NY, USA   Mon 11 Nov 2024 add   Sun 10 Nov 2024 add   Oxfordshire, UK   Hutchinson, MN, USA   Shakopee, MN, USA   Sat 9 Nov 2024 add   Fri 8 Nov 2024 add   Melbourne, Australia   Hsinchu, Taiwan   Airdrie, Scotland   Ramsey, MN, USA   Tacoma, WA, USA

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

• 2014-08-29 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

• 2013-12-03 39 -84 Cincinnati, OH. Smack on the tarmac of Lunken Airport. Almost epic enough to justify the police record. Humbucker (talk) 14:15, 3 December 2013 (EST)
• 2013-11-27 global globalhash, Mongolia is about 1km off a dirt road around 10km north of Tosontsengel, Mongolia and it has an airport.1PE (Canberra) (talk)
• 2013-10-25 global GlobalHash in Spain, 48 km from Ponferrada, 113 km from León, 210 km from Salamanca, 366 km from Madrid --LeslieHapablap (talk) 09:57, 24 October 2013 (EDT)
• 2013-07-12 41 -6 (GlobalHash) by 1PE - northern Portugal, just off the N220 east of the village of Carvalhal, itself east of Torre de Moncorvo. Even do-able from Spain: Salamanca or Zamora.
• 2013-07-04 34 35 by 1PE - Syria! Near a major road intersection, in an olive grove.
• 2013-03-28_39_-76 by OfficeLinebacker - In some woods near a river near Conowingo, MD. Already went to two today, don't feel like driving another 4 hours. Looks nice and very reachable, though.
• 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.