GeoNames Forum

Hi there,

I am using the timezone service but realised that the below returns the wrong DST offset:

http://ws.geonames.org/timezone?lat=30.05&lng=31.25

dstOffset should actually be 2.0 for Egypt.

I have tested this with many other countries and they seem to be correct except this one. If you can fix this it would be much appreciated.

First of all you should not use the ws.geonames.org server as it is deprecated, use the server api.geonames.org instead:

http://geonames.wordpress.com/2011/01/28/application-identification-for-free-geonames-web-services/

The dstOffset is deprecated as well and no longer supported:
http://www.geonames.org/export/web-services.html#timezone

It gives the offset at first of July.
gmtOffset: offset to GMT at 1. January (deprecated)
dstOffset: offset to GMT at 1. July (deprecated)

The timezoneId is the relevant piece of information, it refers to the olson timezone database that is included in most programming environments and includes the dst rules.

Best

Marc