Comet Calendar, The Official Event Calendar for UT Dallas en-us This week's academic calendar at UT Dallas Spring 2017 Last Day to Withdraw from a Graduate Course with an Automatic "W" Full-Term Session Thursday, Mar 30 ]]> Summer 2017 Web Registration Open Enrollment Monday, Apr 3 ]]> Spring 2017 "Signature Required" Period to Withdraw from UG Courses 2nd 8-Week Session Tuesday, Mar 21 - Monday, Apr 17 ]]>