Difference between revisions of "Globalhash"

Revision as of 16:47, 2 December 2011

Reaching a globalhash may be very challenging, even if it does fall near your graticule.

The decimals generated by the geohashing algorithm can also be used to generate a single point on the globe instead of one for each graticule and this award celebrates those lucky or mad enough to pursue that single point.

To generate this point take W30 decimals for a date (to make it global) and multiply the latitude by 180 and subtract 90, and the longitude by 360 subtracting 180. This will generate a single point on the globe which is today's only globalhash.

Proof is the same as any hash, but at the single day's coordinates. Good luck! The odds of the globalhash falling in your graticule are 1 in 64,800!

21.591871161557,-168.100616374430

Example

For 10 September 2008, the W30 decimals generated were 0.2642955149758937 and 0.45661491254372155 for latitude and longitude respectively.

0.26429551497589370 * 180 =  47.5731926957 -  90 = -42.4268073043° Latitude
0.45661491254372155 * 360 = 164.3813685160 - 180 = -15.6186314840° Longitude

Or 42.4268073043° S, 15.6186314840° W which is in the south Atlantic Ocean, near Gough Island.

Locations

KML ¦ Google Maps - all globalhashes, beginning 2008-05-26 until 2008-09-08.

Hashpoint lists or overview maps requested with the Small Hash Inquiry Tool always include the globalhash of today and upcoming dates as available.

DAGAAG (Danatar's Approximate-Globalhash-At-A-Glance manual lookup map): If the online tool doesn't work and you want to avoid difficult calculations, just have a quick glance at the approximate location. Take the W30-adjusted coordinate offset (e.g. from the peeron map, but don't use American graticules) and compare it with the map using the black grid lines. If this gives a location at the other end of the world, you don't have to think about it any more, but if it is near you, you will have to use a calculator to get the exact location. See example here (for 2008-09-10 like in the other example above).

The Online Globalhashing Tool appears to be broken again. It appears to be looking in the wrong place (irc.peeron.com?) for the DJIA and always comes up with either blank or zero. No idea when it will get fixed.

Winners

The following Geohashers have won this award, and have supplied proof.

NWoodruff & LuxMundi - 2010-01-12 global
Robyn & Wade - 2010-03-28 global
Yann Vernier, Klas Meder Boqvist & Roos - 2011-08-29 global
B_cereus at 2011-11-10 global
Per S at 2011-11-30 global

Honorable mentions

David Souther made it within 8 miles of the 2009-03-04 globalhash before Mother Nature turned him back.
Dvdllr attempted a Puppet Master globalhash on 2010-09-08, with limited success.

Ribbon Template

Template:Globalhash

This user earned the Globalhash achievement

by reaching the globalhash for [[{{{date}}} global|{{{date}}}]].

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 ==Locations==
 *[http://relet.net/data/media/kml/globalhashes.kml KML] ¦ [http://maps.google.de/maps?f=q&hl=de&geocode=&q=http:%2F%2Frelet.net%2Fdata%2Fmedia%2Fkml%2Fglobalhashes.kml&ie=UTF8&ll=0.979032,-34.301594&spn=177.252635,360&z=1 Google Maps] - all globalhashes, beginning 2008-05-26 until 2008-09-08.
 *Hashpoint lists or overview maps requested with the [[User:Ekorren/Hash_Inquiry_Tool|Small Hash Inquiry Tool]] always include the globalhash of today and upcoming dates as available.
 * DAGAAG ([[User:Danatar|Danatar]]'s [http://wiki.xkcd.com/geohashing/Image:Globalhash-at-a-glance.png Approximate-Globalhash-At-A-Glance manual lookup map]): If the online tool doesn't work and you want to avoid difficult calculations, just have a quick glance at the approximate location. Take the W30-adjusted coordinate offset (e.g. from the peeron map, but don't use American graticules) and compare it with the map using the black grid lines. If this gives a location at the other end of the world, you don't have to think about it any more, but if it is near you, you will have to use a calculator to get the exact location. [http://wiki.xkcd.com/geohashing/Image:Globalhash-at-a-glance-example.png See example here] (for 2008-09-10 like in the other example above).
-*The [http://www.drwilco.net/globalhash/map.html Online Globalhashing Tool] appears to be working properly again. <!-- The way it acquires the Dow opening appears to have broken on May 8, 2009, so global hashpoints for all dates since then are incorrect.--> Look up any date since 1928-10-01. Please note that this tool is known to frequently give wrong locations after the DJIA was announced. It usually switches to the correct locations after a few minutes but that may also take several hours.
+*The [http://www.drwilco.net/globalhash/map.html Online Globalhashing Tool] appears to be broken again. <!-- The way it acquires the Dow opening appears to have broken on May 8, 2009, so global hashpoints for all dates since then are incorrect.--> <!-- Look up any date since 1928-10-01. Please note that this tool is known to frequently give wrong locations after the DJIA was announced. It usually switches to the correct locations after a few minutes but that may also take several hours.-->  It appears to be looking in the wrong place (irc.peeron.com?) for the DJIA and always comes up with either blank or zero.  No idea when it will get fixed.
 == Winners ==