user: Question: What is the date when Richmond was 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: ['Fitzroy', '8.5 (53)', 'South Melbourne', '10.15 (75)', 'Brunswick Street Oval', 6936.0, '16 July 1966']
SQL:

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