An always updated calendar of CEM public events is available using the below URLs
How to add a calendar feed to Google Calendar
1a.) Copy the calendar feed link
2a.) Navigate to your Google Calendar.
3a.) Click the down arrow to the right of "Other calendars" on the left.
4a.) Click "Add by URL" within the menu.
5a.) Paste the link copied from step "1a." into the box.
6a.) Click the "Add calendar" button.
Note: Click the calendar you just added in order to display it.
How to add a calendar feed to MS Outlook 2007
1b.) Copy the calendar feed link
2b.) Launch MS Outlook 2007.
3b.) Click the "Tools" menu and select "Account Settings".
4b.) Click the "Internet Calendars" tab within the "Account Settings" dialog.
5b.) Click the "new" button.
6b.) Paste the link copied from step "1b." into the box.
7b.) Name your calendar within "Subscription options".
8b.) Your calendar will be displayed on the left within "other calendars".
Note: Merge your calendar by clicking the arrow on your new trip calendar tab.
How to add a calendar feed to Apple iCal
1c.) Copy the calendar feed link
2c.) Launch Apple iCal
3c.) Select "Subscribe" from the "Calendar" menu
4c.) Paste the link copied from step "1c." into the "Calendar URL" box
5c.) Click the "Subscribe" button
6c.) Modify anything you want on the next dialog box
7c.) Your calendar will be listed on the left side navigation below "Subscriptions"
How to add a calendar feed to Apple iPhone
1d.) Copy the calendar feed link
2d.) Paste the link copied from step "1d." into an email
3d.) Send the email to your iPhone
4d.) Open the email on your iPhone
5d.) Click the link within the email on your iPhone
6d.) Click the "Subscribe" button on the dialog that appears
7d.) Click the "View Events" button to go to your trip calendar feed or click the "Done" button.
How to export & import an .ICS file to MS Outlook 2003
1e.) Click the "Add to calendar" link at the top-right of your trip details page.
2e.) Click the "Export to .ICS format" link
3e.) Choose to save the file instead of opening it, when prompted
Note: Opening or double-clicking the .ics file will either create a new calendar or only add the first appointment in the file to your calendar (depending on your version of Outlook). For best results import the .ics file. Read below.
4e.) Launch MS Outlook, and choose
5e.) "Import and Export" from the File menu
6e.) Choose the option to Import an iCalendar file from the box that pops up
7e.) Browse to the file you saved in step "3e.", and select it
8e.) Choose the "Import" button to add the data to your existing calendar.
Courtesy of Kayak.