<Li> 11 December 1946: Rajendra Prasad was elected as president and H.C. Mukherjee was elected as vice-president of the constituent assembly . B.N. Rau was appointed as its constitutional adviser . </Li> <Li> 13 December 1946: An' Objective Resolution' was moved by Jawaharlal Nehru in the assembly, laying down the underlying principles of the constitution . It finally became the Preamble of the constitution . </Li> <Li> 22 January 1947: Objective resolution unanimously adopted . </Li> <Li> 22 July 1947: National flag adopted . </Li>

When was the resolution passed by the constituent assembly