user: Question: Tell me the launch date with Institutional authority of NDC and launch vehicle of Hatf-XI
Columns: ['Launch Vehicle', 'Launch date', 'Institutional authority', 'Launch site', 'Results']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Hatf-I', 'October 20, 1989; 00:00 GMT', 'SUPARCO', 'Sonmiani Terminal', 'Success']
SQL:

assistant: SELECT "Launch date" FROM "Table" WHERE "Institutional authority" = 'NDC' AND "Launch Vehicle" = 'Hatf-XI';