CREATE TABLE table_name_23 (date VARCHAR, record VARCHAR, decision VARCHAR, home VARCHAR)

Decision of parent, and a Home of philadelphia, and a Record of 20 16 7 is on what date?
SELECT date FROM table_name_23 WHERE decision = "parent" AND home = "philadelphia" AND record = "20–16–7"
SELECT "date" FROM "table_name_23" WHERE "20–16–7" = "record" AND "decision" = "parent" AND "home" = "philadelphia"