property Calendar.MinDate as Date
Retrieves or sets the min date.

TypeDescription
Date A Date expression that indicates the lower limit for dates to be displayed or selected.
By default, the MinDate property is Jan 1, 100. Use the MinDate and MaxDate property to specify a range to limit the date to be displayed or selected. The Date property is automatically updated so the browsed date fits the limited range.  When the browsed date is changed the control fires the  DateChanged event. By default, the Date property points to the current date.