user: Question: When was the game played at Glenferrie Oval?
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', '12.11 (83)', 'Richmond', '12.15 (87)', 'Brunswick Street Oval', 32000.0, '20 April 1946']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Venue" = 'Glenferrie Oval';