Hi.

I'm looking for this for north america. I've seen loads of databases
with zip, city name, lat, lon, timezone, etc. but I need something
that's more of a grid where I can look up a lat/lon and get a timezone
back.

I'm willing to pay for it, but I can't find anything via various
google searches.

I suppose that I could take a zip code db with lat/lon and reverse
engineer it knowing that it's resolution will be that of the US
+Canadian zip code map.

Thanks,

Jim

"jims" <jim (AT) asrc (DOT) cestm.albany.edu> wrote

A half-baked answer for you.
Have a look at http://www.geonames.org/export/
Scroll to the bottom of the page to "Timezone"
Click on the example which returns a browser window with an XML result file.
Timezone names are odd (to me at least) but follow an IANA (proposed?)
standard http://www.hermetic.ch/cal_stud/newman.htm 6.6 - might be better
documention elsewhere.
Not sure how they are doing it exactly but maybe they can point you at their
datasource or you could piggyback on their service.

Thanks, Ronnie. I'll have a look.

-jim