"Having almost 160 years of history of Municipal Corporation Shimla the autonomous existence starts with the passing of the Himachal Pradesh Municipal Corporation Act, 1994 (H.P. Municipal Corporation Act, 1994) government revised the delimitation of wards into 21. With 5 retention policies now the city is having 25 wards."
January 1, 1970
https://en.wikiquote.org/wiki/Shimla