Title: World Cup of Hockey
Content:  The World Cup of Hockey is an international ice hockey tournament. Inaugurated in 1996, it is the successor to the Canada Cup, which was held every 3 to 5 years from 1976 to 1991 and was the first international hockey championship to allow nations to field their top players. The World Cup has occurred thrice before on an irregular basis, with the United States winning in 1996 and Canada winning in 2004 and 2016. Following the 2016 tournament, it is uncertain if the series will continue, with the 2020 tournament being cancelled. The World Cup of Hockey is organized by the National Hockey League (NHL) and the National Hockey League Players' Association (NHLPA), unlike the annual Ice Hockey World Championships and quadrennial Olympic tournament, both run by the International Ice Hockey Federation (IIHF). World Cup games are played under NHL rules and not those of the IIHF, and the tournament occurs prior to the NHL pre-season, allowing all the NHL's players to be available, unlike the World Championships, which overlaps with the NHL's Stanley Cup playoffs.
Title: World Cup of Hockey
Content:  In 1996, the Canada Cup was officially replaced by the World Cup of Hockey. The Canada Cup trophy was retired. The tournament expanded to eight teams: as the national teams of Canada, United States, Czech Republic, Finland, Russia and Sweden, popularly dubbed as the Big Six, were joined by Germany and Slovakia. The United States defeated Canada to win the inaugural event. Eight years later, the second installment of the World Cup of Hockey took place in 2004, just prior to the 2004–05 NHL lockout. Canada won its first tournament championship, defeating the Czech Republic in the semifinals and Finland in the final match. On January 24, 2015, NHL commissioner Gary Bettman announced the 2016 World Cup of Hockey to be held in September 2016 at Air Canada Centre in Toronto. 
Title: World Cup of Hockey
Content:  The World Cup of Hockey was preceded by the Canada Cup, which began in 1976 in a combined effort from Doug Fisher of Hockey Canada and Alan Eagleson of the NHL Players' Association. Taking inspiration from soccer's FIFA World Cup, Eagleson proposed a new tournament that would bring together all the top hockey–playing nations. After successful negotiations with hockey officials from the Soviet Union in September 1974, Eagleson began arranging the Canada Cup tournament, which debuted in 1976. It was the first international ice hockey tournament that allowed hockey nations to field their top players, as the Winter Olympics was a strictly amateur competition and the annual World Championships clashed with the Stanley Cup playoffs. The tournaments, held every three to five years, took place in North American venues prior to the start of the National Hockey League (NHL) regular season. Six teams competed in each edition. Of the five Canada Cup tournaments, four were won by Canada, while the Soviet Union won one, that being in 1981.
Title: 2016 World Cup of Hockey
Content:  All games are Eastern Daylight Time (UTC−04:00). Start date: September 8, 2016. Source: National Hockey League
Title: World Cup of Hockey
Content:  2016 edition featured a slightly modified format: alongside the Big Six countries, there were two all-star teams, consisting of Team Europe and an under-23 Team North America. Canada again won the championship, defeating Team Europe in the finals. The 2020 edition was planned to include a European qualification tournament to determine some participating nations. In January 2019, plans for the tournament were abandoned due to the pending expiration of the collective bargaining agreement (CBA) between the NHL and the NHL Players' Association. In August 2019, it was reported that a World Cup could take place in February 2021 if the CBA could be extended or renewed; however, this was ruled-out by the NHL later that year. The league will attempt to hold the next edition of the World Cup in 2024.
Title: Royal Dutch Hockey Association
Content:  Although the first (men's) Hockey World Cup was held in Barcelona in 1971, there were plans to organise a World Cup as early as 1938. Then, the FIH planned to host a World Cup in Amsterdam, as a substitute for the Olympic hockey tournament, which was cancelled because there was not enough accommodation in Helsinki, where the 1940 Olympics were to be held. The tournament would take place from 2 to 13 May, in the Olympic stadium in Amsterdam and the associations of, amongst others, British India (consecutive winner of the three previous Olympic tournaments), Afghanistan, Japan, Argentina, New Zealand and many European countries had declared to participate. The women's tournament would last from 8 to 12 May and four countries participated: The Netherlands, Germany, South Africa and Australia. A few months after the outbreak of World War II in January, the tournament was called off.
Title: 2018 Men's Hockey World Cup
Content:  The schedule was published on 27 February 2018. All times are local (UTC+5:30).
Title: 2004 World Cup of Hockey
Content:  The 2004 World Cup of Hockey was an international ice hockey tournament. It was the second installment of the National Hockey League (NHL)-sanctioned competition, eight years after the inaugural 1996 World Cup of Hockey. It was held from August 30 to September 14, 2004, and took place in various venues in North America and Europe. Canada won the championship, defeating Finland in the final, held in Toronto. The tournament directly preceded the NHL lockout, as the NHL announced they were locking out players during 2004–05 season two days after the tournament final was played, pending the adoption of a new Collective Bargaining Agreement.
Title: 2016 World Cup of Hockey
Content:  The 2016 World Cup of Hockey (abbreviated WCH2016) was an international ice hockey tournament. It was the third installment of the National Hockey League (NHL)-sanctioned competition, 12 years after the second World Cup of Hockey in 2004. It was held from September 17 to September 29 at Air Canada Centre in Toronto, Ontario. Canada won the championship, defeating Team Europe in the best-of-three final.
Title: 2014 Men's Hockey World Cup
Content:  The host was announced on 11 November 2010 during the FIH Congress and Forum in Montreux, Switzerland after FIH received bids from The Hague and London.

Question: when does the world cup of hockey start?
Answer: 2020.