User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36 Steps to reproduce: The Venezuelan time zone is in lightning with -04: 30 hours, when it really is -04: 00 hours Actual results: When I synchronize the calendar with Google Calendar, the time of the events is delayed by 30 minutes. Expected results: Keep the same time that the event is created in Google Calendar

Timezone America/Caracas was already fixed with https://hg.mozilla.org/comm-central/rev/cd64861e22c692f2237e60b141b113ec0a8d0665 in Bug 1266424 for Lightning 5.4 and newer.