CREATE TABLE table_204_805 (id DECIMAL, "name" TEXT, "club" TEXT, "date of departure" TEXT, "replacement" TEXT, "date of appointment" TEXT)

hans r. esmer and christophe larrouilh were both replaced in what month in 2009 ?
SELECT "date of departure" FROM table_204_805 WHERE "name" = 'hans r. emser'
SELECT "date of departure" FROM "table_204_805" WHERE "name" = 'hans r. emser'