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_21002034_7 ( _number INTEGER, air_date_netherlands_yyyy_mm_dd VARCHAR )

### Question ###
Name the most number for air date 2009/12/29

### Accurate SQL ###

SELECT MAX(_number) FROM table_21002034_7 WHERE air_date_netherlands_yyyy_mm_dd = "2009/12/29"