More detailed information regarding UChicago grading policies can be found here.
The end of the quarter for Autumn is the Saturday at the end of the 11th week since start (including the one week Thanksgiving Break). For Winter and Summer, the end of the quarter is the Saturday at the end of the 10th week. For Spring, the end of the quarter is the Saturday of Convocation, at the end of the 11th week since the start (including the week prior to Convocation that follows final exams). Degree conferral takes place on the Friday of the 11th week in the Autumn, the Friday of 10th week in Winter and Summer quarters, and the Saturday of the 11th week (Convocation) in the Spring quarter. Grades for graduating students must be submitted online by 11:59PM the Saturday one week before awarding of degrees. (If submitting a paper or .pdf grade sheet, the deadline is 3:00PM on the Friday one week before awarding of degrees). All other final grades must be submitted to the University Registrar the Tuesday following the end of Winter quarter, the Wednesday following the end of Summer and Autumn quarters, and the Tuesday prior to Convocation, during the 11th week of Spring quarter. Individual Division and Schools may adjust these grade deadlines per arrangements with the University Registrar.