The Adventure Starts Here
Geohashing is a game of spontaneous adventure generation played around the world since 2008. You will explore random locations, meet fellow geohashers, brave the elements, unlock achievements, and then come back here to document your expedition.
As I saw him running back down the hill I exclaimed, "He's running back, that means he must have found it.", I was quickly rebuffed with, "Unless he's being chased!"
|find some more great geohashing quotations here.|
—Two companions talking during 2012-06-16 33 -117
How to play?
- Get today's coordinates with a coordinate calculator
- Go there (or as close as you safely and legally can)
- Create an account (Returning after a break? All accounts created before 2020-02-02 were deleted; you'll need to sign up again)
- Write about your expedition!
How does Geohashing work?
Everyday, an algorithm generates a random coordinate from stock market data. That coordinate can be applied to every 1°×1° latitude/longitude graticule in the world, giving a point that might be in a field, a forest, a city, or even out at sea! Everyone in the world gets the same set of coordinates relative to their graticule.
Each day, people try to get their nearest generated coordinate, for an adventure, to discover somewhere new, or to meet up with other geohashers. Afterwards, you can 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)! Join the other 'spot spotters', be out standing in your field and use this wiki to document the daily coordinates (geohashes) you’ve been to or tried to reach.
Each day there is also a single globalhash somewhere on Earth: rare, valued and much harder to reach.
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:
- There's a stripped-down expedition template for frequent expeditioners: Use
- There's a new map for exploring past expeditions and today's geohash: geohashing.win
- We have now reached 15000 expeditions!
- The PHP version underlying the wiki engine software has been updated. Let DanQ know if you spot any new (or old) bugs.
- Happy first anniversary of the wiki's revival, if you count the 'birthday' as the date of the first user account creation plus the announcement on IRC!
- The subdivision geohash is an achievement now.
- SIGSTKFLT is doing a slow rollout of Ribbon2. Add a comment if you see any problems.
- It's now possible to upload and embed GPX tracklogs of your expeditions.
Official xkcd meetups
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.
Gallery of recent expeditions
Every expedition should have one photo in that day's gallery, selected manually. Please add yours with the "add" link. If that day's gallery hasn't been started yet, please start it.
Recent and Upcoming Coordinates
The coordinates for the next Saturday meetups, scheduled for 30 September 2023, will be based on the Dow’s opening price published at 09:30 EDT (13:30 UTC) on Friday 29 September. See timeanddate.com to convert this time to your local time zone.
- Coordinates: Wed 27 Sep* | Tue 26 Sep | Mon 25 Sep | Sun 24 Sep | Sat 23 Sep | Fri 22 Sep | Thu 21 Sep | Wed 20 Sep
* Only known for regions east of 30W longitude. Coordinates for regions to the west announced 13:30 UTC, 27 September.
- View expedition archives for: September 2023 | August 2023 | July 2023 | More...
All recent expeditions
This section documents hash expeditions that geohashers wish they could make, but have not been able to for the reasons stated.