CREATE TABLE table_23211041_7 (date VARCHAR, location_attendance VARCHAR)

If the location attendance is the Verizon Center 20,173, what is the date?
SELECT date FROM table_23211041_7 WHERE location_attendance = "Verizon Center 20,173"
SELECT "date" FROM "table_23211041_7" WHERE "Verizon Center 20,173" = "location_attendance"