Time-traveller achievement

Template:Time-traveller

This user earned the Time-traveller achievement by reaching both the ({{{latitude}}}, {{{longitude}}}) and ({{{latitude2}}}, {{{longitude2}}}) geohashes at exactly {{{time}}} on {{{date}}}.

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.
  • Near the prime meridian, you might be in the circle of uncertainty for two hashpoints simultaneously. At the equator, this happens if the longitude of the hashpoint is less than +/- 0.000036°.
  • Further from the equator this longitude can be calculated from 0.000036° / cos(Latitude). The poles are singularities, so if the hashpoint latitude is very close to 90°, it would be possible to be standing on 360 hashpoints at once!
  • A similar effect applies at longitude +/- 179.999964°, but only at weekends.
  • On weekdays hashpoints east and west of longitude 30°W are calculated separately, so may both be close to 30°W or 180°E/W. However, pretty much all of these points will be in an ocean.

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

Winners

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 ;)

See also

Multihash -- reach multiple geohashes on one day