1. Get your ICS export URL from your google.calendar.com
    2. Now go to google calendar settings and click on Private Address ICAL which is shown in Fig. 1.0
img              3. Now Open Jevent Control Panel and click on Manage Calendar
      3.1 Use the URL for the ICS export from Google in the URL field which is shown in the Fig. 1.1

img         4.  In the list of calendars click the icon in the "Anon Refresh" column. See the Fig . 1.2

img           5. Copy the link from the URL that then appears beneath this icon
img        6. Use this URL in a cronjob that fetches this URL as frequently as you want.

             6.1 You could use an online service like Setcronjob to do this for you.
             If you want to run this using a cronjob on your unix based server then this is the entry in the cron file that I use:
             1,31 * * * * /usr/bin/curl -s http://www.mydomain.com/index.php?option=com_jevents&icsid=6&task=icals.reload > /dev/null 2>&1
             of you could try

           1,31 * * * * /usr/bin/wget -O /dev/null "http://www.mydomain.com/index.php?option=com_jevents&icsid=13&task=icals.reload" >            /dev/null 2>&1