The following four pages present the Calendar in different formats. You will see the differences.
If you want to subscribe to the Monthly Calendar, here are two options:
a. Subscribe to ICal format: https://calendar.google.com/calendar/ical/3q7jnvhdv79ha78j1l6lmt8uog%40group.calendar.google.com/public/basic.ics
b. Embed the calendar into a web page: https://calendar.google.com/calendar/embed?src=3q7jnvhdv79ha78j1l6lmt8uog%40group.calendar.google.com&ctz=America%2FLos_Angeles