Table:
text: 1993 Australian 2.0 Litre Touring Car Championship
Race calendar
Race calendar
Circuit Location_State Date_ Winning_driver Team
Mallala Motor Sport Park Mallala , South Australia 2 - 4 Jul John Smith Caltex Team Toyota
Barbagallo Raceway Perth , Western Australia 9 - 11 Jul John Smith Caltex Team Toyota
Oran Park Raceway Sydney , New South Wales 6 - 8 Aug Peter Doulman M3 Motorsport

Question: On what date was Mallala Motorsport Park the circuit for the 1993 Australian 2.0 liter Touring Car Championship?