Table:
text: 1984 Chicago Cubs season
Gmae log
May
Date_ Opponent Score Loss Attendance Record
May 11 @ Astros 3 - 1 Ruthven (2-4) 16829 17-13
May 12 @ Astros 5 - 4 DiPino (1-2) 20737 18-13
May 13 @ Astros 1 - 0 Reuschel (0-1) 13405 18-14
May 15 @ Reds 6 - 3 Pastore (2-3) 13074 19-14
May 16 @ Reds 10 - 4 Russell (2-4) 12899 20-14
May 17 @ Reds 5 - 3 Ruthven (2-5) 18974 20-15
May 18 Astros 7 - 6 Smith (0-1) 16812 21-15
May 19 Astros 5 - 4 Dawley (2-3) 34122 22-15
May 20 Astros 10 - 3 M. Scott (2-2) 27503 23-15
May 23 Braves 3 - 1 McMurtry (3-5) 15860 24-15

Question: What was the date of the Cubs game that had an attendance of over 20,737 and a loss by Dawley (2-3) for the May Gmae Log's 1984 Chicago Cubs season?