It would be really awesome to just select the timezone and have the country be automatically selected. I *think* that we can find a mapping between timezones and locations. http://stackoverflow.com/questions/2826419/country-to-timezones-in-php-z... may be of assistance.
Closed: won't fix
9.5
Last updated
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
I don't think this is possible because more than one country can be in a timezone. And the abbreviations often used are not unique, for example, 'BST' refers to three different timezone.
List of time zones by country
List of time zone abbreviations
Therefore, closing.