CREATE TABLE table_11059 ("Year" FLOAT, "Competition" TEXT, "Date" TEXT, "Surface" TEXT, "Location" TEXT, "Score" TEXT, "Result" TEXT)

Which surface has a Date of 24 25 apr?
SELECT "Surface" FROM table_11059 WHERE "Date" = '24–25 apr'
SELECT "Surface" FROM "table_11059" WHERE "Date" = '24–25 apr'