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_71248 ( "Date" text, "Location" text, "Nature of incident" text, "Circumstances" text, "Casualties" text )

### Question ###
When was the location 15km NW of Pol-E Khomri, the circumstaances IED and the casualties of 1 WIA?

### Accurate SQL ###

SELECT "Date" FROM table_71248 WHERE "Casualties" = '1 wia' AND "Circumstances" = 'ied' AND "Location" = '15km nw of pol-e khomri'