| 1 | A | B | C | D | E | F | G |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | List of Chief Ministers of Nagaland - List |  |  |  |  |  |  |
| 3 | No | Name | Term of office | Term of office | Party | Party | Days in office |
| 4 | 1 | P. Shilu Ao MLA for Impur | 1 December 1963 | 14 August 1966 | Naga Nationalist Organisation | - | 987 days |
| 5 | 2 | T. N. Angami MLA for Western Angami | 14 August 1966 | 22 February 1969 | Naga Nationalist Organisation | - | 924 days |
| 6 | 3 | Hokishe Sema MLA for Akuluto | 22 February 1969 | 26 February 1974 | Naga Nationalist Organisation | - | 1831 days |
| 7 | 4 | Vizol Angami MLA for Southern Angami-II | 26 February 1974 | 10 March 1975 | United Democratic Front | - | 378 days |
| 8 | 5 | John Bosco Jasokie MLA for Kohima Town | 10 March 1975 | 20 March 1975 | Naga National Democratic Party | - | 11 days |
| 9 | – | Vacant (President's rule) | 20 March 1975 | 25 November 1977 | N/A | - | - |
| 10 | (4) | Vizol Angami MLA for Southern Angami-II | 25 November 1977 | 18 April 1980 | United Democratic Front | - | 876 days [Total 1254 days] |
| 11 | 6 | S. C. Jamir MLA for Aonglenden | 18 April 1980 | 5 June 1980 | United Democratic Front—Progressive | - | 49 days |
| 12 | (5) | John Bosco Jasokie MLA for Kohima Town | 5 June 1980 | 18 November 1982 | Naga National Democratic Party | - | 897 days [Total 908 days] |
| 13 | (6) | S. C. Jamir MLA for Aonglenden | 18 November 1982 | 28 October 1986 | United Democratic Front—Progressive | - | 1440 days |
| 14 | (3) | Hokishe Sema | 29 October 1986 | 7 August 1988 | Indian National Congress | - | 648 days [Total 2479 days] |
| 15 | – | Vacant (President's rule) | 7 August 1988 | 25 January 1989 | N/A | - | - |
| 16 | (6) | S. C. Jamir MLA for Mokokchung Town | 25 January 1989 | 10 May 1990 | Indian National Congress | - | 471 days |
| 17 | 7 | K. L. Chishi MLA for Atoizu | 16 May 1990 | 19 June 1990 | Indian National Congress | - | 36 days |
| 18 | 8 | Vamuzo Phesao | 19 June 1990 | 2 April 1992 | Nagaland People's Council | - | 653 days |
| 19 | – | Vacant (President's rule) | 2 April 1992 | 22 February 1993 | N/A | - | - |
| 20 | (6) | S. C. Jamir MLA for Aonglenden | 22 February 1993 | 6 March 2003 | Indian National Congress | - | 3665 days [Total 5625 days] |
| 21 | 9 | Neiphiu Rio MLA for Northern Angami-II | 6 March 2003 | 3 January 2008 | Nagaland People's Front | - | 1767 days |
| 22 | – | Vacant (President's rule) | 3 January 2008 | 12 March 2008 | N/A | - | - |
| 23 | (9) | Neiphiu Rio MLA for Northern Angami-II | 12 March 2008 | 24 May 2014 | Nagaland People's Front | - | 2264 |
| 24 | 10 | T. R. Zeliang MLA for Peren | 24 May 2014 | 22 February 2017 | Nagaland People's Front | - | 1005 |
| 25 | 11 | Shurhozelie Liezietsu | 22 February 2017 | 19 July 2017 | Nagaland People's Front | - | 147 |
| 26 | (10) | T. R. Zeliang MLA for Peren | 19 July 2017 | 8 March 2018 | Nagaland People's Front | - | 232 [Total 1237 days] |
| 27 | (9) | Neiphiu Rio MLA for Northern Angami-II | 8 March 2018 | Incumbent | Nationalist Democratic Progressive Party | - | 418 |

Question: When did T. R. Zeliang serve as the Chief Minister of Nagaland?
Answer: T. R. Zeliang twice served as the Chief Minister of Nagaland, first from May 2014 to February 2017 and then from July 2017 to March 2018.