Table:
text: Yugoslavia national football team results
1991
1991
Date_ City Opponent Results¹ Type_of_game
February 27 İzmir , Turkey Turkey 1:1 Friendly
March 27 Belgrade Northern Ireland 4:1 Euro `92 Qualifier
May 1 Belgrade Denmark 1:2 Euro `92 Qualifier
May 16 Belgrade Faroe Islands 7:0 Euro `92 Qualifier
August 8 Aosta , Italy Czechoslovakia 3:4 (pen.) Friendly
September 4 Stockholm , Sweden Sweden 3:4 Friendly
October 16 Landskrona , Sweden Faroe Islands 2:0 Euro `92 Qualifier
October 30 Varginha , Brazil Brazil 1:3 Friendly
November 13 Vienna , Austria Austria 2:0 Euro `92 Qualifier

Question: When is Northern Ireland opponents Yugoslavia national football team results 1991?