CREATE TABLE table_47389 ("Date" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Decision" TEXT, "Attendance" FLOAT, "Record" TEXT, "Points" FLOAT)

What is Date, when Attendance is greater than 20,066, and when Visitor is 'Boston Bruins'?
SELECT "Date" FROM table_47389 WHERE "Attendance" > '20,066' AND "Visitor" = 'boston bruins'
SELECT "Date" FROM "table_47389" WHERE "Attendance" > '20,066' AND "Visitor" = 'boston bruins'