Google posted the following information about the Google Calendar outage:
https://www.google.com/appsstatus#hl=en&v=issue&sid=2&iid=847490285bf1b9e082a699bafb95f53b
The status of Google Apps can be checked at: http://www.google.com/appsstatus#hl=en&v=status
The Oracle Calendar system will be offline for approximately 30 minutes for routine database maintenance.
This will affect users who access the calendar via the web or Outlook.
Oracle calendar will be offline for approximately 15 minutes for database maintenance. This will affect users who access the calendar via the web or Outlook.
Oracle calendar will be offline for approximately 30 minutes for database maintenance. This will affect users who access the calendar via the web or Outlook.
The Oracle Calendar server will be inaccessible for approximately 30 minutes for updates and database maintenance. This will affect users who access the calendar via the web or Outlook.
The Oracle Calendar server will be inaccessible for approximately one hour while updates are installed. This will affect users of the web calendar and Outlook.
Oracle calendar will be upgraded to a newer version. The calendar will not be accessible from the web or Outlook during the upgrade.
Routine database maintenance
Routine database maintenance
The calendar server was again experiencing high CPU use and was rebooted.