This is the iCal link to install the calendar on your Phone:https://www.google.com/calendar/ical/i1q0g99tncj81e254mrv2dg3kg%40group.calendar.google.com/public/basic.icsCopy
this link, then create a new calendar on your phone, and paste this address to subscribe.
[ For iPhones, go to Settings > Mail, Contacts, Calendars > Add Account > Other > Add Subscribed Calendar. Paste the link and click Next. Go to your calendar and tap the calendar link, and enable the subscribed calendar!]