CREATE TABLE table_24907 ("Team" TEXT, "Outgoing manager" TEXT, "Manner of departure" TEXT, "Date of vacancy" TEXT, "Replaced by" TEXT, "Date of appointment" TEXT)

What was the date in which Behtash Fariba left his team?
SELECT "Date of vacancy" FROM table_24907 WHERE "Outgoing manager" = 'Behtash Fariba'
SELECT "Date of vacancy" FROM "table_24907" WHERE "Outgoing manager" = 'Behtash Fariba'