CREATE TABLE table_49704 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponents" TEXT, "Score" TEXT)

What date was the match where Daniel Gimeno-Traver's partner was pere riba?
SELECT "Date" FROM table_49704 WHERE "Partner" = 'pere riba'
SELECT "Date" FROM "table_49704" WHERE "Partner" = 'pere riba'