Question: When was the concert where King of Rock was performed  held? 
Context: The Exploits Valley Salmon Festival is an annual festival held in Grand Falls-Windsor of the Exploits Valley, Newfoundland and Labrador, Canada that dates back to 1985.  Events that are part of the festival include a dance in a stadium and a dinner of salmon.  There is also a concert, although the concert in 2007 was so poorly attended that the organisers lost $200,000 on it.  The organisers continued to lose money on the festival in 2008, 2009, and 2010.  Businessman Boyd Cohen was the patron of the 2009 festival.  The main festival concert in 2010 featured Matthew Hornell and the Diamond Minds.  There was also a gospel concert that was attended by hundreds of people.  Kellie Loder, Starfield, and Reverend Roy Martin performed at this concert.  In 2012, "The Daily Telegraph" named the festival one of the top ten attractions for British foodies vacationing in Canada.  In 2011, The town signed a deal with concert promoters RFO.  As a result, the festival experienced a resurgence attracting larger crowds, The shows were headlined by popular groups such as Kiss, Smash Mouth and Down with Webster in 2011, Aerosmith & Flo Rida in 2012, The Eagles and The Tragically Hip in 2013, Maroon 5 in 2014 and John Fogerty, Tom Cochrane, America and The Fables (making their first public performance in 12 years) in 2015. Rock and Roll Over Tour is a concert tour by the American hard rock group Kiss.  It began November 24, 1976 (shortly after the release of the Rock and Roll Over album) and ended April 4, 1977.  It was on this tour where the band performed for the first time at Madison Square Garden on 2/18/77 - a venue all four members of the band had long dreamed of playing (February 18, 1977).  The band also performed in Japan for the first time on this tour.  They played Budokan Hall four nights in a row breaking the previous concert attendance record set by The Beatles.  On December 12, 1976 Ace Frehley suffered a severe electrical shock on stage which delayed the concert.  The delay lasted about fifteen minutes and then resumed; Ace was able to finish the show despite having lost feeling in one of his hands.  Being inspired by the event, Ace wrote the song "Shock Me" which appeared on Kiss' next album release Love Gun (1977).  It is the first Kiss song in which Ace sings lead vocals.  This was the first tour on which "Beth" was performed live; instead of being played by the entire band, it was sung solo by drummer Peter Criss to a recording of the instrumental track from the Destroyer album. Live Aid was a dual-venue benefit concert held on 13 July 1985, and an ongoing music-based fundraising initiative.  The original event was organised by Bob Geldof and Midge Ure to raise funds for relief of the ongoing Ethiopian famine.  Billed as the "global jukebox", the event was held simultaneously at Wembley Stadium in London, England, United Kingdom (attended by 72,000 people) and John F. Kennedy Stadium in Philadelphia, Pennsylvania, United States (attended by about 100,000 people). The Global Warming Tour was a concert tour by American hard rock band Aerosmith that included 67 concert performances across North America, Oceania, Asia and Latin America.  Prior to the first leg of the tour, the band played a private event for Walmart shareholders.  The first leg of the tour included 23 performances and lasted from late May through early August 2012.  The second leg included 14 performances in November and December 2012.  Before the second leg of the tour, the band performed a brief set at the iHeartRadio Music Festival in mid September.  Also prior to the second leg, to promote the release of their new album in early November, the band made three special nationally televised performances in New York City and also did a special performance in front of their old Boston apartment.  The performances on the first two legs of the tour were held primarily in indoor arenas, with a couple outdoor shows and a few festival dates on the first leg, including three festivals in eastern Canada and Milwaukee's Summerfest.  The third leg of the tour ran from late April to mid May 2013 and saw Aerosmith playing their first shows in Australia since 1990, as well as their first-ever shows in New Zealand and the Philippines.  On May 30, the band performed as part of the "Boston Strong" charity concert for victims of the Boston Marathon bombings.  In July 2013, the band played at the Greenbrier Classic in West Virginia and at Foxwoods Resort Casino in Connecticut.  In August 2013, the band performed four concerts in Japan, but their first-ever shows in China and Taiwan were cancelled due to poor ticket sales.  The band also performed in August at the Harley-Davidson 110th anniversary concert series in Milwaukee.  Concerts were planned for Latin America in September and October, including their first-ever shows in Uruguay, Guatemala and El Salvador. "King of Rock" is a 1985 single by Run–D.M.C. and the title track from their album "King of Rock".  It was featured on the video games "", "", and is a downloadable track on "Rock Band 3".  The song was sampled for Michael Jackson's song "2 Bad" and was performed by the group at the 1985 Live Aid concert.  Eddie Martinez is the song's lead guitarist and appears in the video. Symphonic Odysseys: Tribute to Nobuo Uematsu was a symphonic tribute concert held in Cologne, Germany on July 9, 2011 at the Cologne Philharmonic Hall.  The concert exclusively paid homage to the work of Japanese composer Nobuo Uematsu and featured music selected from his works as a video game music composer.  Among the games featured were "Lost Odyssey", "Blue Dragon", "Last Story", "King's Knight", "Chrono Trigger", "Final Fantasy Legend", and selected works from the "Final Fantasy" series.  The concert was produced and directed by Thomas Böcker, with arrangements provided by Finnish composer and musician Jonne Valtonen, along with Roger Wanamo, Masashi Hamauzu, and Jani Laaksonen.  The concert was performed by the WDR Rundfunkorchester Köln and the WDR Radio Choir Cologne under conduction from Arnie Roth, with guest performers Benyamin Nuss and Juraj Čižmarovič joining the orchestra.  A video recording of "Symphonic Odysseys" was streamed live online. Symphonic Fantasies: Music from Square Enix was an award-winning symphonic tribute concert held in Cologne, Germany on September 12, 2009 at the Cologne Philharmonic Hall featuring video game music from Japanese game developer Square Enix.  The concert featured symphonic movements based on the "Kingdom Hearts" series, "Secret of Mana", the "Chrono" series, and the "Final Fantasy" series.  The concert was produced and directed by Thomas Böcker, with arrangements provided by Finnish composer and musician Jonne Valtonen with assistance by Roger Wanamo.  Due to overwhelming demand, a second concert was necessitated at the König-Pilsener-Arena in Oberhausen, on September 11, 2009.  The concert was performed by the WDR Radio Orchestra Cologne and the WDR Radio Choir Cologne under conduction from Arnie Roth, with guest performers Rony Barrak and Benyamin Nuss joining the orchestra.  "Symphonic Fantasies" was broadcast over radio on the WDR4 station and streamed live video online. A concert hall is a cultural building with a stage which serves as a performance venue and an auditorium filled with seats.  While early halls built in the 18th and 19th century were designed for classical orchestra, concerto and opera concerts and ballet performances, halls built in the 20th and 21st century were often built to accommodate a wider range of performance types, including musicals.  In the 2010s, popular music such as rock music and traditional music such as folk music are also performed in these venues.  Many concert halls exist as one of several halls or performance spaces within a larger performing arts center.  In many towns, the concert hall is combined with a convention center.  Concert halls typically also contain orchestral rehearsal rooms.  Many larger cities have both public and private concert halls.  Particularly in smaller cities with fewer alternative venues, concert halls may also be used to accommodate other activities, from theatrical performances to academic presentations and university graduation ceremonies. The Diana, Princess of Wales Tribute Concert was a British music concert held in memory of Diana, Princess of Wales on 27 June 1998, a few days before the date of what would have been her 37th birthday.  The concert was held at Althorp Park, the Northamptonshire seat of the Spencer family, and Diana's childhood home.  Artists and groups who performed at the concert were among those enjoyed by the late Princess, and included Sir Cliff Richard, Chris de Burgh, David Hasselhoff, Duran Duran, Jimmy Ruffin and Lesley Garrett.  The concert was attended by 15,000 people, with proceeds from ticket sales being donated to the Diana, Princess of Wales Memorial Fund, but the £39.50 price attracted criticism due to its perceived expense.  Phil Collins, who did not appear at the concert, was among those to comment on the amount charged to concertgoers.  Highlights of the concert were broadcast on BBC One on the evening of 1 July. Live in Cuba is the first live DVD of the American rock supergroup Audioslave, containing footage of the free concert that the band performed in Cuba in front of over 70,000 people.  The concert itself is considered to be a historical event, as it marks the second time (following The Fabulous Titans in 1981) in Cuban history that an American rock band has been permitted to perform within the country.  The DVD features the show itself, and also a 37-minute documentary based on the band and their time spent in Cuba.  According to Chris Cornell (said during the concert), at the time the concert was performed it was the longest one that Audioslave had played.
Answer: 13 July 1985