CREATE TABLE table_39269 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Game site" CLOB, "Attendance" CLOB)

When is it has 15,557 Attendances?
SELECT "Date" FROM table_39269 WHERE "Attendance" = '15,557'
SELECT "Date" FROM "table_39269" WHERE "Attendance" = '15,557'