▁ ▁Survey ▁and ▁Cad ast re ▁Category : National ▁mapping ▁ag encies ▁Category : 1 9 8 9 ▁establish ments ▁in ▁Den mark ▁Category : Environment al ▁ag encies ▁in ▁Den mark <0x0A> </s> ▁The ▁Mayor ▁of ▁Kol k ata ▁is ▁the ▁chief ▁executive ▁of ▁the ▁Kol k ata ▁Municipal ▁Corporation , ▁one ▁of ▁the ▁civ ic ▁authorities ▁in ▁the ▁Indian ▁city ▁of ▁Kol k ata . ▁He ▁is ▁the ▁First ▁Cit izen ▁of ▁the ▁city ▁of ▁Kol k ata . ▁There ▁have ▁been ▁ 3 9 ▁may ors ▁of ▁Kol k ata ▁in ▁total ▁till ▁now ▁since ▁first ▁election ▁in ▁ 1 9 2 4 . ▁ ▁History ▁The ▁first ▁Kol k ata ▁Municipal ▁E lection ▁was ▁held ▁on ▁ 1 6 ▁April ▁ 1 9 2 4 , ▁during ▁the ▁time ▁of ▁British ▁India , ▁under ▁the ▁Cal cut ta ▁Municipal ▁Act , ▁ 1 9 2 3 ▁- ▁Beng al ▁Act ▁III ▁of ▁ 1 9 2 3 . ▁May ors ▁were ▁elected ▁on ▁an ▁annual ▁basis . ▁No ▁corpor ation ▁elections ▁were ▁held , ▁therefore ▁there ▁was ▁no ▁mayor , ▁from ▁ 1 9 4 8 ▁to ▁ 1 9 5 2 . ▁In ▁ 1 9 5 2 ▁further ▁may ors ▁were ▁appointed ▁on ▁an ▁annual ▁basis ▁under ▁the ▁Cal cut ta ▁Municipal ▁Act , ▁West ▁Beng al ▁Act ▁XXX III ▁of ▁ 1 9 5 1 . ▁There ▁was ▁another ▁break ▁in ▁mayor al ▁elections ▁from ▁ 1 9 7 2 ▁to ▁ 1 9 8 5