 The surrounding cities are the union territory of Chandigarh, Mohali, Patiala, Zirakpur and Roopnagar in Punjab, Panchkula, and Ambala in Haryana.Chandigarh is situated 119 km southwest of Shimla, 30 km (19 miles) northeast of Ambala, 236 km (148 miles) southeast of Amritsar and 230 km (144 miles) north of Delhi.Derabassi has a humid subtropical climate (Köppen