CREATE TABLE table_42390 ("Year" FLOAT, "Result" FLOAT, "World Rank" TEXT, "Location" TEXT, "Date" TEXT)

When was Steve Williams in Zurich and his result was 10.07?
SELECT "Date" FROM table_42390 WHERE "Location" = 'zurich' AND "Result" = '10.07'
SELECT "Date" FROM "table_42390" WHERE "Location" = 'zurich' AND "Result" = '10.07'