CREATE TABLE table_31560 ("Name" TEXT, "Circuit" TEXT, "Date" TEXT, "Winning driver" TEXT, "Winning constructor" TEXT, "Report" TEXT)

Tell me the date for bugatti fpr stanislas czaykowski
SELECT "Date" FROM table_31560 WHERE "Winning constructor" = 'bugatti' AND "Winning driver" = 'stanislas czaykowski'
SELECT "Date" FROM "table_31560" WHERE "Winning constructor" = 'bugatti' AND "Winning driver" = 'stanislas czaykowski'