Calendar
Public URL: 
https://calendar.google.com/calendar/embed?src=2keapb5rjbhatb7qhnr15m7jas%40group.calendar.google.com&ctz=Europe%2FAmsterdam

Calendar ID:
2keapb5rjbhatb7qhnr15m7jas@group.calendar.google.com

Public address (for use with other apps)
https://calendar.google.com/calendar/ical/2keapb5rjbhatb7qhnr15m7jas%40group.calendar.google.com/public/basic.ics
URLS FOR YOUR CONVENIENCE