How to get a time zone from a location using latitude and longitude coordinates?

Question

Given the latitude and longitude of a location, how does one know what time zone is in effect in that location?

In most cases, we are looking for an IANA/Olson time z

Answer 1

How about this solution for node.js https://github.com/mattbornski/tzwhere

And its Python counterpart: https://github.com/pegler/pytzwhere