student leaders and activists of Swadheen Bangla Nucleus on 6 June 1970, at room 108 of Iqbal Hall (now Sergeant Zahurul Haq hall), Dhaka University; students involved with the design were namely Kazi Aref Ahmed, ASM Abdur Rab, Shahjahan Siraj, Manirul Islam etc.....
Yousuf Salahuddin Ahmed and Enamul Haq, at Enamul's room (312) in Quaid-I Azam Hall (now Titumir Hall), EPUET (now BUET).[3][4] Later the map was painted in the red circle by Shib Narayan Das.[5] On 2 March 1971
On January 13, 1972 the flag was modified. The map from the center was removed and the red disk was moved towards the hoist