CREATE TABLE table_7893 ("Outcome" TEXT, "Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent" TEXT, "Score" TEXT)

On what date did Jesse Levine play on a hard surface?
SELECT "Date" FROM table_7893 WHERE "Surface" = 'hard' AND "Opponent" = 'jesse levine'
SELECT "Date" FROM "table_7893" WHERE "Opponent" = 'jesse levine' AND "Surface" = 'hard'