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_22137 ( "English name" text, "Thai name" text, "Abbr." text, "Transcription" text, "Sanskrit word" text, "Zodiac sign" text )

### Question ###
How many zodiac signs does the month by the Thai name of belong to?

### Accurate SQL ###

SELECT COUNT("Zodiac sign") FROM table_22137 WHERE "Thai name" = 'กันยายน'