No matter where you are in the Calendar application, you can easily switch calendar views. Simply tap the date in the upper left corner of the screen to display a drop-down menu of calendar views. Tap Day, Week, Month, or Agenda.
To view more information about an event in the Agenda, Day, or Week view, tap the event.
To view the events of a day in Month view, tap a day. The event will be displayed below the month calendar in one of the other views. Tap the event to view its details.