Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_28 (date VARCHAR, constructor VARCHAR, fastest_lap VARCHAR)
### Question:
What is the date that Stirling Moss had his fastest lap in a Maserati?
### Answer:
SELECT date FROM table_name_28 WHERE constructor = "maserati" AND fastest_lap = "stirling moss"