You need to increase the width of your columns. DayView control will automatically truncate it if there isn't enough room to display the day name.

           ' Set the 'MinimumColumnWidth' property to 150 to prevent the columns
            ' from becoming too narrow when the user resizes them
            Me.dayViewAppointments.MinimumColumnWidth = 115

            ' Set the 'PreferredColumnWidth' property to 150 so the columns
            ' start off with that initial width
            Me.dayViewAppointments.PreferredColumnWidth = 115
 

Hi, I have a problem with UltraDayView.  The weekday displayed at the top center, is truncated only on Wednesday.  The "y" is not displayed on the end, so it just says "Wednesda".  I have looked on the forums and all through the documentation, and tried tweaking a bunch of properties on the UltraDayView control. But I still can't seem to track down where this is getting trunc'd.  Can anybody help?  In my code I am setting DayTextFormat to "dddd":

this.dayView.DayTextFormat = "dddd";