When I am logged in, I can view several calendars together. Is there a way to make this combined view public?

I can view individual calendars but have not been able to find a way to create a public view that shows all of my shared calendars together.

For example, I have several calendars that I have shared, I can view each one individually, ex:
http://myhostname/Calendar.html
http://myhostname/Calendar2.html
http://myhostname/Calendar3.html


This is more or less what I want to display in the public view: