_CalendarView.DayWeekFont Property
Office 2010
Returns a ViewFont object that represents the font used when displaying items for a specified day in the CalendarView object. Read-only.
Assembly: Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)
The value of this property also represents the font used to display the day header and the minute portion of the time header when the CalendarViewMode property of the CalendarView object is set to either olCalendarViewDay, olCalendarViewMultiDay, olCalendarViewWeek, or olCalendarView5DayWeek.