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Benvenuto sul Geohashing Wiki. Il Geohashing è tratto dal webcomic xkcd. Continua a leggere in Flag of Germany.png Tedesco - Flag of Spain.png Spagnolo - 800px-Flag of Sweden.png Svedese - and maybe other languages.

See, two weird looking young men, are sitting on somebody's roof maybe a 100 meters away from a military base, have no explanation of what they are doing there ("uh, well, we picked a random spot and went there, officer, honest!"), and one has a hat with a communist star. Right. Not suspicious in the least.
find some more great geohashing quotations here.
Superbest, describing the strategic retreat to the roof of a stranger's house for the night.


Che cosa è?

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

Il Geohashing è un metodo per trovare luoghi completamente casuali e visitarli: è un "generatore automatico di avventure". Ogni giorno l'algoritmo genera un nuovo set di cordinate per ogni zona 1° x1° di latitudine/longitudine (chiamata graticola) nel mondo. Le coordinate potrebbero essere ovunque -- in una foresta, in città, in una montagna, o addirittura nel mezzo di un lago. Chiunque nelle stessa graticola otterrà le stesse cordinate. Queste coordinate possono essere usate come destinazione per nuove avventure o come punti d'incontro. Dopo l'esplorazione, per favore, documentate la vostra spedizione! Tutti noi siamo ansiosi di leggere la vostra storia, vedere le vostre foto o festeggiare le vostre conquiste (o commiserare i vostri fallimenti). Potete usare questo wiki per documentare giornalmente le coordinate che avete provato o siete riusciti a raggiungere.

Learn more

How to geohash:

Other people's expeditions:

Get involved



news archiveEdit What's new on the wiki?

  • The Eclipse achievement has been added.
  • The N-in-a-row achievement has been added.
  • The renaming process for the MNIMB, MNB, and Virgin Graticule achievements/consolation prizes is ongoing.
  • The most active graticule for 2024-03 was -37,145.

More pages needing discussionDiscussion archiveEdit Now discussing - please join in: 


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 4 May 2024, will be based on the Dow’s opening price published at 09:30 EDT (13:30 UTC) on Friday 3 May. See timeanddate.com to convert this time to your local time zone.

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.