Difference between revisions of "Time-traveller achievement"

Revision as of 12:12, 6 August 2015

This user earned the Time-traveller achievement

The achievement can be claimed if you venture to two or more geohashing locations on the same day and the same local time.

If you don't own a time-machine, you could ...

cross a time-zone border.
take advantage of the autumn daylight saving clocks change.
- Geohashers nearer the equator are at a disadvantage because they have further to travel east or west.
- Geohashers near longitude 0 or 180 might be lucky and not have to travel far at all.
get lucky.
- If, at the equator, the longitude is less than +/- 0.000036° you will be in the circle of uncertainty for two hashpoints simultaneously.
- Further from the equator the this longitude can be calculated from 0.000036 / cos(Latitude). The poles are singularities!
- A similar effect applies at longitude +/- 89.999964°.

Of course, as usual, you need to upload photos of yourself containing the necessary proof.

Woodveil was at the 2009-03-08 33 -84 and 2009-03-08 33 -85 hashes at 12:39 local time.

B2c and Patrizius were at the 2013-10-27 47 13 and 2013-10-27 47 12 hashes at 02:09 local time. It was a DST time travel.

Micsnare and B2c were at the 2014-10-26 47 14 and 2014-10-26 47 13 hashes at 02:01 local time. It was a DST time travel. Again ;)

@@ Line 5: / Line 5: @@
 {{Time-Traveller}}
-The achievement can be claimed if you venture to two or more geohashing locations on the same day and the same '''local''' time. If you don't own a time-machine, you'll probably need to cross a time-zone border. Of course, you need to upload photos of yourself containing the necessary [[Achievements#Proof|proof]].
+The achievement can be claimed if you venture to two or more geohashing locations on the same day and the same '''local''' time.
+If you don't own a time-machine, you could ...
+* cross a time-zone border.
+* take advantage of the autumn daylight saving clocks change.
+** Geohashers nearer the equator are at a disadvantage because they have further to travel east or west.
+** Geohashers near longitude 0 or 180 might be lucky and not have to travel far at all.
+* get lucky.
+** If, at the equator, the longitude is less than +/-   0.000036° you will be in the circle of uncertainty for two hashpoints simultaneously.
+** Further from the equator the this longitude can be calculated from 0.000036 / cos(Latitude). The poles are singularities!
+** A similar effect applies at longitude +/- 89.999964°.
+Of course, as usual, you need to upload photos of yourself containing the necessary [[Achievements#Proof|proof]].
 == Winners ==