CREATE TABLE table_29967 ("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 vacancy date for Thomas Thomasberg?
SELECT "Date of vacancy" FROM table_29967 WHERE "Outgoing manager" = 'Thomas Thomasberg'
SELECT "Date of vacancy" FROM "table_29967" WHERE "Outgoing manager" = 'Thomas Thomasberg'