The googlecalendar shortcode lets you display a calendar on your pages.
Exporting from Google Calendar
First, create a calendar you’d like to share and open its settings.
Next, from the Access Permissions panel, make the calendar available to the public.
Last, from the Integrate Calendar panel, copy the Public URL for the calendar.
Example
Code Sample
[[googlecalendar url="https://calendar.google.com/calendar/embed?src=montclair.edu_6cg6fljb4v4spobnbn1aaa40bg%40group.calendar.google.com&ctz=America%2FNew_York"]]