CREATE TABLE table_63109 ("Round" TEXT, "Date" TEXT, "Against" TEXT, "Score AUFC \\u2013 Away" TEXT, "Attendance" FLOAT, "Weekday" TEXT)

What date has an against of pohang steelers?
SELECT "Date" FROM table_63109 WHERE "Against" = 'pohang steelers'
SELECT "Date" FROM "table_63109" WHERE "Against" = 'pohang steelers'