cross platform time zone library that brings the Olson tz database into Python and allows accurate and cross platform timezone calculations using Python 2.4 or higher. It also solves the issue of ambiguous times at the end of daylight saving time, which you can read more about in the Python Library Reference (datetime.tzinfo).
Please cite the following url: http://pytz.sourceforge.net/
Linux 64 2016.6.1
OS X INTEL 2016.6.1
Other Available Versions
Linux 64 2015.4