In Global Configuration the server time offset can be set.
Sometimes the date and time are inconsistent between extensions when set to "Universal Time, Coordinated (UTC)".
Instead of setting to "Universal Time, Coordinated (UTC)" try using the city name and then add the code below to the .htaccess file in the Joomla root.
SetEnv TZ America/Toronto
Change the "America/Toronto" part to your location.
The list of PHP UTC List of Supported Timezones codes is here.
