Season structure of the NHL

The season structure of the National Hockey League (NHL) is divided into the pre-season, regular season, and the Stanley Cup playoffs. In the pre-season, which is generally held during the last two weeks of September, each team plays several not-for-the-record exhibition games. In the regular season, which generally runs from early October through early April, teams play 82 games which determine their standings. The three highest-placed teams in each division and two wild card teams per conference enter the playoff elimination tournament to determine the Stanley Cup champion.
Pre-season.
The NHL pre-season is generally held during the last two weeks of September. Each team plays roughly six to eight exhibition games. These games allow coaches to evaluate their teams, new players to try out for roster and position spots, and allows established players practice time prior to competitive play. Teams may also have split squad games, in which parts of a team's roster play separate games.
Several pre-season games may be held at neutral sites. Since 2006 in Canada and 2015 in the U.S., Kraft Heinz has sponsored the "Kraft Hockeyville" contests, in which communities compete for the opportunity to host a pre-season game. Several pre-season games held at international sites have also been scheduled, including games between an NHL team and a club from another league overseas.
Regular season.
Since the 1995–96 season, each team in the NHL plays 82 regular season games, 41 each of home and road. In all, 1,271 games are scheduled (480 of them inter-conference).
For the 2017–18 season the NHL regular season formula was adjusted to account for the addition of the Vegas Golden Knights. Each team plays either four or five games against the other teams in its division (a total of 26 or 29 games in the Western Conference, 28 games in the Eastern Conference) as well as playing all non-divisional teams in their own conference thrice (21 or 24 games in the west, 24 games in the east). The remaining games of the season are inter-conference play (32 in the west, 30 in the east), allowing every team in the league to play every other team twice. The schedule is structured so that every NHL team plays in every arena at least once per season.
Each team has a mandatory bye week near the midpoint of the season, during which no regular season games take place. The NHL All-Star Game and its accompanying festivities typically occur during the bye week. From 1998 to 2014, every four years in lieu of an All-Star break, there was a break for the Winter Olympic Games. However, the NHL prohibited players from participation in the 2018 Olympics and future Olympic Games have not been decided.
The league also schedules a three-day Christmas break (since 1971) when no regular season games are played on either Christmas Eve and Christmas Day. Games are not played on December 26 unless it falls on a Saturday, in which case no games would be played on December 23. The NHL also has a holiday roster freeze between December 18 and 27, in which in most cases, players cannot be traded, waived, or sent to the minor leagues.
Two points are awarded for a win (including in overtime or shootout), one point for a loss in overtime or shootout, and no points for a loss in regulation time. If, however, a team pulls their goaltender for an extra attacker during overtime and gives up an empty net goal, the point normally awarded for losing in overtime is forfeited. Pulling a goaltender in overtime was occasionally attempted in certain situations prior to the 2004–05 NHL lockout near the end of a season if earning a single point in overtime would have been worthless for playoff qualification purposes, but with the introduction of the shootout it has not been attempted since.
Stanley Cup playoffs.
At the end of the regular season, 16 teams qualify for the Stanley Cup playoffs, an elimination tournament consisting of three rounds of best-of-seven series to determine which team from each conference will advance to the final round, dubbed the Stanley Cup Final. The top three teams in each division earn automatic berths (6 teams per conference) and the next two teams in the conference earn wild-card spots. The First Round pits the top ranked team in the conference against the lower ranked wild-card and the other division winner against the higher ranked wild-card. The second and third place teams in each division play each other. The top ranked team in a division, along with its wild card opponent and the second and third ranked teams of the same division comprise a group or bracket during the First Round, and the two winners will meet in the Second Round. The Western Conference (Pacific vs. Central divisional bracket champions) and Eastern Conference (Atlantic vs. Metropolitan divisional bracket champions) Finals will determine who faces off in the Stanley Cup Finals.
Any ties in the standings are broken using the following protocols:
For the first two rounds, the higher-seeded team has home-ice advantage (regardless of point record). In the final two rounds, it goes to whoever has the better regular season record (no matter the seeding). The team with home-ice advantage hosts Games 1, 2, 5 and 7, while the opponent hosts Games 3, 4 and 6 (Games 5–7 are played "if necessary").