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AskGeo provides a simple, fast, and accurate Interactive Map, Web API and Java Library for finding out the time zone information for a given location (latitude and longitude). It's simple: you give latitude and longitude and the API returns the unix (Olson) time zone ID (e.g., "America/Chicago", "Europe/London"), the Windows Standard Name for the time zone (e.g., "Pacific Standard Time", "Central European Standard Time"), and the current offset from UTC.

"Veja onde estão os seus amigos agora mesmo. "

Geohashing is a method for finding an effectively random location nearby and visiting it: a Spontaneous Adventure Generator. Every day, the algorithm generates a new set of coordinates for each 1°×1° latitude/longitude zone (known as a graticule) in the world. The coordinates can be anywhere - in the forest, in a city, on a mountain, or even in the middle of a lake! Everyone in a given region gets the same set of coordinates relative to their graticule