Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_66 (date VARCHAR, location VARCHAR, casualties VARCHAR, circumstances VARCHAR)
### Question:
When was the location 15km NW of Pol-E Khomri, the circumstaances IED and the casualties of 1 WIA?
### Answer:
SELECT date FROM table_name_66 WHERE casualties = "1 wia" AND circumstances = "ied" AND location = "15km nw of pol-e khomri"