12.75402 80.20568 9 Asia/Kolkata Tamil Nadu Old Mahabalipuram Road Old Mahabalipuram Road 603103 Tamil Nadu IN Kālavākkam India 12.75400 80.20580 primary 0.013 0.9 Kālavākkam IN Tamil Nadu Tamil Nadu Tamil Nadu India 603103 Old Mahabalipuram Road 12.75400 80.20580 primary 0.013 0.9 CHINGLEPUT-ZWBDK KALAVAKKAM-ZWBDK 4856393556700 6 administrative Tiruporur boundary 55 administrative Chengalpattu district boundary 66 administrative Tiruporur boundary