Link to iPhone calendar:

https://calendar.google.com/calendar/ical/76f76kh79l8e92ei9hb984aeg4%40group.calendar.google.com/public/basic.ics

Open Google calendar in new tab:

https://calendar.google.com/calendar/embed?src=76f76kh79l8e92ei9hb984aeg4%40group.calendar.google.com&ctz=America%2FChicago