Subscribe to events from an external calendar that supports the iCalendar (iCal) format. To use this feature, go to Settings —> Subscribe to a Calendar.
See also:
See section: “Get your calendar (view only)”
Sync your calendar with computer programs
See also our direct integration here:
Under the settings in Outlook on the web, go to Calendar → Shared calendars
Introduction to publishing Internet Calendars
See also our direct integration here: