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_14981555_1 (date VARCHAR, weight__kg_ VARCHAR)

### Question ###
When did the 55 kg participant race?

### Accurate SQL ###

SELECT date FROM table_14981555_1 WHERE weight__kg_ = "55"