Table:
text: Afghanistan national football team
Results and fixtures
Results and fixtures
Date_ Venue Result_ Win_Loss_Draw Competition
2 March 2013 New Laos National Stadium , Vientiane 1–0 W 2014 AFC Challenge Cup qualification
4 March 2013 New Laos National Stadium , Vientiane 1–0 W 2014 AFC Challenge Cup qualification
6 March 2013 New Laos National Stadium , Vientiane 1–1 D 2014 AFC Challenge Cup qualification
20 August 2013 Afghanistan Football Federation Stadium , Kabul 3-0 W International Friendly
2 September 2013 Halchowk Stadium , Kathmandu 3-0 W 2013 SAFF Championship
4 September 2013 Halchowk Stadium , Kathmandu 3-1 W 2013 SAFF Championship
6 September 2013 Dasarath Rangasala Stadium , Kathmandu 0-0 D 2013 SAFF Championship

Question: When was the result of the Afghanistan national football team 3-1?