SilverLight Page not able to submit
If there is a Datetime control in silverlight page. Some times you may not able to submit the page. Please check your server side code related to datetime control. If you are trying read datetime value as MM/DD/YYYY. Make sure that the users computer datetime should be same format.
If users system datetime is DD/MM/YYYY then form will not submit dates between 13th to 31st. It will allow 1st to 12th only.
If users system datetime is DD/MM/YYYY then form will not submit dates between 13th to 31st. It will allow 1st to 12th only.