When Constitution adopted on
1. 26 Jan 1949
2. 26 Nov 1947
3.26 Nov 1949
4. 26 Nov 1948
26 Nov 1949
Constitution came into force
1. 26 Jan 1950
2. 26 Jan 1949
3. 26 Nov 1949
4. 26 Nov 1950
26 Jan 1950.
Preamble passed on –
1.22 July 1947
2. 22 July 1949
3. 22 Jan 1949
4. 22 Jan 1947
22 Jan 1947