CREATE TABLE table_47920 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT, "Position in table" TEXT)

What was the manner of depature of the manager with a date of appointment on 23 November 2008?
SELECT "Manner of departure" FROM table_47920 WHERE "Date of appointment" = '23 november 2008'
SELECT "Manner of departure" FROM "table_47920" WHERE "Date of appointment" = '23 november 2008'