Add this calendar to your phone, Outlook, GMail or other planning program with this link: https://calendar.google.com/calendar/ical/ij5dtmciirj93e69jj71ecfb50%40group.calendar.google.com/public/basic.ics
Here are instructions on how to do it if you use Google Calendar: https://support.google.com/calendar/answer/37100?co=GENIE.Platform%3DAndroid&hl=en&oco=0. Read the section on "Add using a link".