Times are listed in the U.S. Eastern time zone.  

To see other time zones, click on the event and then the "REGISTER HERE" link.  The Webex posting lists 4 time zones, and allows you to select your time zone by clicking on the time zone shown in the upper right corner.  You may also use a Time Zone Converter (Use U.S.A. - New York - New York as the location to convert from) before you click on the event.