TZInfo::Data contains data from the IANA Time Zone database packaged as Ruby modules for use with TZInfo. TZInfo::Data is the public domain [IANA Time Zone Database](http://www.iana.org/time-zones) packaged as a set of Ruby modules for use with [TZInfo](http://tzinfo.github.io). If TZInfo::Data is installed, TZInfo will automatically use it as its source of time zone data. If TZInfo::Data is not available, TZInfo will attempt to use the system zoneinfo files instead. Please refer to the [TZInfo documentation](http://rubydoc.info/gems/tzinfo/frames) for further details.