What date has an against of pohang steelers?
CREATE TABLE table_63109 (
    "Round" text,
    "Date" text,
    "Against" text,
    "Score AUFC \u2013 Away" text,
    "Attendance" real,
    "Weekday" text
)
SELECT "Date" FROM table_63109 WHERE "Against" = 'pohang steelers'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What date has an against of pohang steelers? ### Input: CREATE TABLE table_63109 (
    "Round" text,
    "Date" text,
    "Against" text,
    "Score AUFC \u2013 Away" text,
    "Attendance" real,
    "Weekday" text
) ### Response: SELECT "Date" FROM table_63109 WHERE "Against" = 'pohang steelers'