Add the calendar to your phone via the following links.
iCal format (i.e. for iPhones):
https://calendar.google.com/calendar/ical/c_7o3ar2q9cps163p2ido6av6i78%40group.calendar.google.com/public/basic.ics
Public URL:
https://calendar.google.com/calendar/embed?src=c_7o3ar2q9cps163p2ido6av6i78%40group.calendar.google.com&ctz=America%2FNew_York
https://calendar.google.com/calendar/embed?src=c_5475dd10f2a7070dd8c42a60fce87b562a8c8934071a628502b5e9daa069fef2%40group.calendar.google.com&ctz=America%2FNew_York