Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_21274 ( "Team" text, "Outgoing manager" text, "Manner of departure" text, "Date of vacancy" text, "Replaced by" text, "Date of appointment" text )

### Question ###
What was the date of appointment when J rgen Kohler was the outgoing manager?

### Accurate SQL ###

SELECT "Date of appointment" FROM table_21274 WHERE "Outgoing manager" = 'Jürgen Kohler'