Mohali district, officially known as Sahibzada Ajit Singh Nagar district or SAS Nagar district, is one of the twenty three districts of Punjab, a state in north-west India. It was formed in April 2006 and is 18th district of Punjab, created next to Pathankot district. This district was carved out of areas falling in Ropar and Patiala District. It is situated next to the union territory of Chandigarh and Panchkula district of Haryana. The district is officially named after Sahibzada Ajit Singh, the eldest son of Guru Gobind Singh. From Wikipedia