Rugby union's governing body released an official statement on Thursday to confirm temporary changes to the global calendar.
Meanwhile, as Covid-19 continues to restrict travel, The Rugby Championship will take place between November 7 and the second weekend of December with New Zealand asked to host.
The fixture will also depend on government travelling rules because of the coronavirus pandemic.
The rescheduling of the domestic, European and global calendars will accommodate the ability for the professional clubs to have access to their star southern hemisphere worldwide players for the completion of the postponed and rescheduled 2019/20 seasons at a time in which they would have ordinarily been on worldwide duty in August and September.More news: Sony announces the first batch of TVs that are PS5-ready
In the northern hemisphere, both men's and women's Six Nations schedules will be completed between October 24-31, with a rest weekend foreshadowing four consecutive rounds of men's worldwide matches.
England, France, Ireland, Italy, Scotland, Wales - have proposed a tournament with Japan and Fiji.
The World Rugby Council has approved a temporary adjustment to Regulation 9 to allow the release of global players for the revised windows.
"The global COVID-19 pandemic has been unprecedented in its impact on society and sport and throughout this process, all parties have sought to deliver the best-possible outcome to support the interests of worldwide and club rugby and the players", said World Rugby chairman Sir Bill Beaumont.More news: Red onions imported from US likely behind salmonella outbreak, recall issued
The other outstanding tie - Ireland v Italy - will be played the week before.
The eight-team competition replaces the traditional autumn internationals, in which Wales were scheduled to face South Africa, New Zealand, Argentina and Fiji. Once the Six Nations is concluded, two weeks later the global matches will begin in which Fiji and Japan will play against the powers present in the Six Nations.
The four-team tournament is set to be staged in New Zealand.
Following one week off, the calendar allows for four consecutive weeks of internationals. The location for Wales matches are still to be decided with the Principality Stadium definitely out of action until the end of the year because it is now a field hospital.More news: Uganda: Man Who Killed Rafiki, Uganda's Rare Silverback Mountain Gorilla, Jailed