CREATE TABLE table_45615 ("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 date of appointment for javier aguirre's replacement?
SELECT "Date of appointment" FROM table_45615 WHERE "Outgoing manager" = 'javier aguirre'
SELECT "Date of appointment" FROM "table_45615" WHERE "Outgoing manager" = 'javier aguirre'