Link to iPhone calendar:

https://calendar.google.com/calendar/ical/puhqe60skmu8bhs959ehl2b14s%40group.calendar.google.com/public/basic.ics

Open Google calendar in new tab:

https://calendar.google.com/calendar/embed?src=puhqe60skmu8bhs959ehl2b14s%40group.calendar.google.com&ctz=America%2FChicago