Time Zone Spatial Data

[Schuyler Erle]

* On 22-Apr-2005 at  5:29AM PDT, Simpson said:
>
> I have a requirement to determine timezone offset from GMT given a lat/long.
> Does anyone know of a spatial data set, or software solution that would
> satisfy this requirement?  I guess if spatial data it would have to have
> some temporal information to deal with daylight savings times.

OpenMap ships a copy of the world's time zone in Shapefile format:

    http://openmap.bbn.com/data/shape/timezone/

SDE