Dear everyone
I was hoping someone could send me in the direction of a regularily updating time zone database.
I have found one, but apologies i cant remember where it was from, however with the current GMT clock change fast approaching, i fear all my data will be incorrect, ie the differences from UK to New Yrok will change from 5 hours behind to 6 hours behind.
Any help on this matter would be much appreciated.
Cameron
Do you mean like the Olson database ?
For instance, the fleegix.js javascript library is a timezone-enabled, drop-in replacement for the stock JavaScript Date, giving you full-blown timezone support, independent from the timezone set on the end-user's machine running the browser. It uses the Olson zoneinfo files for its timezone data.
I believe the time-converter uses also such a database, as well as timeanddate.com, e.g. for London or New-York.
Any DST information (Daylight Saving times) can be deduced from timeanddate.com, but also from daylight-savings-time.info
Here is a javascript program that does exploit DST informations in order to apply the correct time shift.
And also another script for SimpleTimeZone.
You can also query DST data from global-time-zones.com, as in wwp.britishsummertime.co.uk. You have also informations in webexhibits.org
See this forum for a lengthy discussion about how to retrieve DST informations.
Finally, see that SO question for a tar.gz Olson database example.
Thank you for the speedy response, basically I am after list of about 50 cities each with their difference to GMT.
I have had a nose at the Olson database and I cant find differenes to GMT
// Add Items to Combo Box.
locations.addItem({data:+0, label:"Abidjan, Ivory Coast"});
locations.addItem({data:+4, label:"Abu Dhabi, UAE"});
locations.addItem({data:+1, label:"Abuja, Nigeria"});
locations.addItem({data:+3, label:"Addis Ababa, Ethiopia"});
locations.addItem({data:+10, label:"Adelaide, Australia"});
locations.addItem({data:+3, label:"Aden, South Yemen"});
locations.addItem({data:-9, label:"Alaska, USA"});
locations.addItem({data:+0, label:"Algiers, Algeria"});
locations.addItem({data:+1, label:"Amsterdam, Netherlands"});
locations.addItem({data:+12, label:"Anadyr, Russia"});
locations.addItem({data:+3, label:"Antananarivo, Madagascar"});
locations.addItem({data:-3, label:"Asuncion, Paraguay"});
locations.addItem({data:+2, label:"Athens, Greece"});
locations.addItem({data:-5, label:"Atlanta, USA"});
locations.addItem({data:+3, label:"Baghdad, Iraq"});
locations.addItem({data:+0, label:"Bamako, Mali"});
locations.addItem({data:+8, label:"Bandar Seri Begawan, Brunei"});
locations.addItem({data:+7, label:"Bangkok, Thailand"});
locations.addItem({data:+1, label:"Bangui, Central African Republic"});
This is the type of thing I have all ready, however I fear it will be incorrect when the clocks change next week, in the UK
If you have the latitude and longitude of wherever it is you want the timezone information for then you can map that to live timezone info using a service such as this one: http://www.earthtools.org/webservices.htm#timezone
If you are starting with an address or place name, you can get the lat/lng information using a geocoding service - e.g. see geonames.org, or google and yahoo also have services. Then use the timezone service as above.