Country to Timezone mapping database

Question

I'm looking at building a form which prompts a user for their timezone. I've looked at the 'Google approach' and it seems to work pretty well. You first select a country from a drop down list and based on the selection, it populates the drop down list with the time zone options. I've search all over for a decent database with a country - timezone relationship but can't seem to find one. Does anyone know where i can find one?

Answer 1

If a commercial solution is acceptable, you could check out the World Time Zone Database.

Answer 2

Ruby on Rails uses the following mapping for timezones: http://apidock.com/rails/TimeZone

Answer 3

Have you tried zoneinfo? http://www.twinsun.com/tz/tz-link.htm

"The public-domain time zone database contains code and data that represent the history of local time for many representative locations around the globe. It is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight-saving rules. This database (often called tz or zoneinfo) is used by several implementations, including the GNU C Library used in GNU/Linux, FreeBSD, NetBSD, OpenBSD, Cygwin, DJGPP, AIX, Mac OS X, OpenVMS, Oracle Database, Solaris, Tru64, and UnixWare."

Hope that helps :)