You can view someone else's calendar if they've shared it with you. You can also request access if they haven't shared their calendar with you yet.
Show or hide a calendar you're subscribed to
To add a calendar, go to calendar.google.com. You can show or hide calendars you’ve subscribed to.
- Open the Google Calendar app .
- Tap Menu Settings .
- Tap the calendar you want to view.
- To find more available calendars, tap Show more.
- Turn Sync on or off.