City Time Zone
City Time Zone does exactly one thing - tell you the time zone of a given city.
Usage
The simplest (and currently only) way to use city time zone is this:
require 'city_time_zone'
CityTimeZone.lookup "City name"
At the moment this returns the time zone using the same name as ActiveSupport::TimeZone uses. This differs from the format used by tz databases, and not all TZ time zones map to ActiveSupport ones. The lookup suffers accordingly. Future versions of this gem will rectify that.
The first time you call #lookup it will take a few seconds to return as it populates its database with the cities from the data file.
Data
City time zone data uses data from GeoNames. This is found in the data/cities.txt file