I hope I can make this understandable. I found a link that explained it.
Say you are in the year view, with all 12 months shown. Click on the day button (December 4 for today) and you'll get the one month view. The icon to the left of the search icon will have a box stacked on two lines, like the calendar view on top of the list view. If you press that icon and toggle it, that's the view you'll get, the monthly calendar on top and the list on the bottom.
Now press on the icon and toggle it off. Then press on the "day" (December 4th for today's date) and you'll get the "day" view, with the full days appointments in calendar view mode. Notice the icon changes from the box over two lines (the "calendar over list" view) to three lines (the "list" view). Now touch that icon to toggle it on and you'll get the full list view for all your appointments.
Hope that helps. I've been frustrated for a couple of weeks and finally found a good link.
This may explain it better. http://www.imore.com/how-change-calendar-view-options-your-iphone-and-ipad