BanglaCapsule | Bangladesh History on  Sep 17

1974 The United Nations General Assembly today unanimously admitted Bangladesh to the United Nations as its 136th member; the Bangladeshi Foreign Minister Dr Kamal Hossain acknowledged the greetings of member nations on the historic occasion in a speech from the UN rostrum.
Google | United Nations Timeline
1975 Ganayan Natya Sampraday, a drama group, was founded in Chittagong.
Google | Ganayan Natya Sampraday Timeline