Add MaxDate and MinDate properties to avoid selecting dates out of range. Examples:
Avoid selecting dates in the past:
Datepicker1.MinDate: Today()
Set maximum selectable date to 1 year in the future since today:
Datepicker1.MaxDate: DateAdd( Today(), 1, Years )
Attached image shows what it would look like MinDate property ๐
Updating status and adding @FilipK