diff --git a/school.d/umich.crawl.inc b/school.d/umich.crawl.inc
--- a/school.d/umich.crawl.inc
+++ b/school.d/umich.crawl.inc
@@ -283,6 +283,24 @@ function umich_crawl_semester(array $sch
 							$row_accumulation['Instructor']),
 				     $meeting_type,
 				     $credit_hours);
+
+      /*
+       * If the section so far passed as being a normal section, use
+       * its start and end dates to help determine the semester's
+       * respective start and end dates.
+       */
+      $date_start_tm = strptime(trim($row[$fields['Start Date']]), '%m/%d/%Y');
+      $date_end_tm = strptime(trim($row[$fields['End Date']]), '%m/%d/%Y');
+      if (!empty($date_start_tm) && !empty($date_end_tm))
+	{
+	  $date_start = school_crawl_gmmktime($date_start_tm);
+	  $date_end = school_crawl_gmmktime($date_end_tm);
+	  if ($date_start > 1000000 && $date_end > 1000000)
+	    {
+	      $semester->time_start_set_test($date_start);
+	      $semester->time_end_set_test($date_end);
+	    }
+	}
     }
 }