CREATE TABLE table_49579 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

What date was the opponent in the final Barbara Paulus?
SELECT "Date" FROM table_49579 WHERE "Opponent in the final" = 'barbara paulus'
SELECT "Date" FROM "table_49579" WHERE "Opponent in the final" = 'barbara paulus'