Can you add what platform you are working with? There's various libraries, e.g. for PHP: http://php.net/manual/en/function.geoip-time-zone-by-country-and-region.php you'll probably find that Googling `convert country to timezone ` will get you results
– PekkaMar 30 '16 at 09:26
For JS, eg. http://stackoverflow.com/questions/19783249/getting-time-zone-when-entering-state-and-country-time-zone-to-use-in-ics-file
– PekkaMar 30 '16 at 09:28