Implement two-digit year parsing referred as €œThe 2029 Rule€ in the control like the parsing in Excel. Examples: In Excel: typing 1/1/70 returns 1/1/1970 In RadDatePicker: typing 1/1/70 returns 1/1/2070 For more information use the description at this link
Telerik code appears to be just using the current century, and not using the system desginated rule for two digit years. Telerik.Windows.Controls.DateParser.SetYear(DateTime current, int n)
Interpretation of the Two Year rule, is supposed to come from: System.Globalization.CultureInfo.CurrentCulture.Calendar.TwoDigitYearMax It determined by the operating system. See the following documentation. http://msdn.microsoft.com/en-us/library/system