CREATE TABLE table_77555 ("Date" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Decision" TEXT, "Attendance" FLOAT, "Record" TEXT)

What was the date that the decision was Niittymaki, the attendance larger than 19,207, and the record 28 17 5?
SELECT "Date" FROM table_77555 WHERE "Decision" = 'niittymaki' AND "Attendance" > '19,207' AND "Record" = '28–17–5'
SELECT "Date" FROM "table_77555" WHERE "Attendance" > '19,207' AND "Decision" = 'niittymaki' AND "Record" = '28–17–5'