Documentation for Team Calendars 3.2 and earlier.
See the [Latest Team Calendars documentation].

Subscribing to Google calendar from Team Calendars

1. Open Google Calendar and click 'Calendar Settings' > 'Calendar Details' > 'Private Address'. Now, export the calendar data in 'iCal compatible' .ics format. You will be given a long URL with .ics at the end. Copy this URL to the clipboard.

2. Open Team Calendars and click 'Add Calendar' > 'Subscribe By URL'. The 'Subscribe' dialog appears.

3. Fill in a calendar name, description, the calendar URL and your username and password credentials for the calendar.
4. Team Calendars will now add all the content from the external calendar.

Team Calendar reads Google's calendars and caches them for an hour by default. Currently, there's no way to configure the synchronization frequency or interval via the UI. The feature request is tracked here: TEAMCAL-1198 - Getting issue details... STATUS and there's a workaround available in the report.