user: Question: When was Fitzroy the home team?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Melbourne', '12.10 (82)', 'St Kilda', '9.11 (65)', 'MCG', 20232.0, '26 July 1930']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Home team" = 'Fitzroy';