To show only the first letter of the day-names you need to set AbbreviatedDayNames of the current DateTimeFormat:
calendar.Culture = new System.Globalization.CultureInfo("en-US")
DateTimeFormat = new System.Globalization.DateTimeFormatInfo()
AbbreviatedDayNames = "M,T,W,T,F,S,S".Split(',').ToArray()
Also you can get a smaller control by defining a smaller width and height. Unfortunately there is no way to display the date in one row or column.
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