Time zone database for ClockSync. This application is only usable from ClockSync 1. 1. 6 and later, it has no launcher icon or any user interface. Don't install unless instructed to do so by ClockSync. Based on Joda Time 2. 0 library and Olson tz database this app provides up to date information on time zones, offsets and daylight time saving transition rules to ClockSync.