12.98671 80.15296 19 Asia/Kolkata Tamil Nadu Airport Service Road Airport Service Road 600016 Tamil Nadu IN Chennai India 12.98671 80.15296 20 0.000 1 Chennai IN Tamil Nadu Tamil Nadu Tamil Nadu India 600016 Airport Service Road 12.98671 80.15296 20 0.000 1 CHENNAI-PGYYT TIRUSULAM-PGYYT 4856341196323 6 administrative Alandur boundary 55 administrative Chengalpattu district boundary 66 administrative Alandur boundary