1. Delhi 12, 13 Aug., 1967
2. Kanpur 11, 12 April, 1970
3. Mumbai 22, 23 May, 1972
4. Amritsar 19, 20 April, 1975
5. Jaipur 21, 22, 23 April, 1978
6. Calcutta 7, 8 March, 1981
7. Hyderabad 9, 10, 11 January, 1984
8. Bangalore 26, 27, 28 Dec. 1987
9. Vadodra 21, 22, Feb., 1991
10. Dhanbad 18, 19, 20 March 1994
11. Bhopal 28, 29, 30 Oct. 1996
12. Nagpur 15, 16, 17 Feb. 1999
13. Trivendrum 22, 23, 24 Feb 2002
14. Delhi 3, 4, 5 April 2005
15. Cuttack 5, 6, 7 April 2008
16. Jalgaon 19-21 Feb 2011