CREATE TABLE table_55233 ("Match" FLOAT, "Date" TEXT, "Competition or tour" TEXT, "Ground" TEXT, "Opponent" TEXT, "Score1" TEXT)

What is the date ground A and Cartagena as an opponent?
SELECT "Date" FROM table_55233 WHERE "Ground" = 'a' AND "Opponent" = 'cartagena'
SELECT "Date" FROM "table_55233" WHERE "Ground" = 'a' AND "Opponent" = 'cartagena'