The 2021 Super League season will start on March 11, with the Grand Final being played at Old Trafford on October 9.
Players will be given an extended period of recovery ahead of them taking on a full pre-season, with the later start date being a result of the impact of Covid-19.
Magic Weekend will also return to the 2021 calendar, with Newcastle’s St James’ Park hosting the event on May 29-30.
Clubs will play 13 home fixtures in a 27-game season, including the Magic Weekend. The later start results in a repeat of the six-team play-off format used this season.
Super League executive chairman Robert Elstone said: “With our players performing at the highest level, late into November, it is important that we give our players time to recover and prepare properly for the 2021 campaign.
“Many of them will be looking to force themselves into the selection decisions for the Rugby League World Cup and pre-season will be a key part of their plans.
“What is also clear with the ongoing uncertainty around Covid-19 is that a later start date gives us a better chance of playing more games in front of fans in 2021.”
Fixtures for the 2021 Super League season will be released in January.