CREATE TABLE table_5620 ("Date" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Decision" TEXT, "Attendance" FLOAT, "Record" TEXT)

On what date was the record 4 0 0?
SELECT "Date" FROM table_5620 WHERE "Record" = '4–0–0'
SELECT "Date" FROM "table_5620" WHERE "Record" = '4–0–0'