With Redtail's Calendar, you have the option to set your default view as either a Day, Week or Month view. You can always change your view when actually looking at your Calendar, but most likely you have a view that you would prefer to be your default view.
To set your default Calendar view, go to your Preferences page:
The third section you'll see on your Preferences page is Calendar Management:
Click inside the Default Calendar View box to select from your available options of Day, Month, or Week.
After selecting Day, Week or Month, click Save Preferences in the upper right hand corner of the Calendar Management section and you will have successfully changed your Default Calendar View.