CREATE TABLE table_73623 ("Team" CLOB, "Outgoing manager" CLOB, "Manner of departure" CLOB, "Date of vacancy" CLOB, "Position in table" CLOB, "Replaced by" CLOB, "Date of appointment" CLOB)

When 1. fc k ln is the team what is the date of appointment?
SELECT "Date of appointment" FROM table_73623 WHERE "Team" = '1. FC Köln'
SELECT "Date of appointment" FROM "table_73623" WHERE "Team" = '1. FC Köln'