CREATE TABLE table_22422 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT, "Position in table" TEXT)

Name the date of vacancy for 29 december 2008 being date of appointment
SELECT "Date of vacancy" FROM table_22422 WHERE "Date of appointment" = '29 December 2008'
SELECT "Date of vacancy" FROM "table_22422" WHERE "Date of appointment" = '29 December 2008'