user: Question: when was the ship launched when it was laid down 20 October 1924 and built by Fujinagata Shipyards, Japan?
Columns: ['Kanji', 'Name', 'Builder', 'Laid down', 'Launched', 'Completed']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['睦月', 'Mutsuki DD-19', 'Sasebo Naval Arsenal , Japan', '21 May 1924', '23 July 1925', '25 March 1926']
SQL:

assistant: SELECT "Launched" FROM "Table" WHERE "Builder" = 'Fujinagata Shipyards, Japan' AND "Laid down" = '20 October 1924';