Wrong.  Let&#x27;s say an event is scheduled for 6pm daily in Toronto (EST -0500).  You store it as 11pm UTC.  Now eventually we switch to EDT -0400 due to DST.  Now your system will say the event is at 7pm local time.<p>YOU just rescheduled the event.<p>Works the same with dates and not just times.  If you store each of those events individually and the politicians move the DST switch date (or an error was corrected in the TZ database) then some of your event times will now be an hour off.