The rings were later illuminated and the neighbouring Rainbow Bridge lit up in a multi-coloured display, as organisers looked to provide a symbol that the rearranged Games can go ahead safely next year.
Following the pulling out of Canada and Australia from the Olympics and taking into account the safety of athletes, the Japan Olympic Committee president on Monday said they were considering pushing back the Tokyo Games.
Tokyo was certainly in a celebratory mood on Friday as a vibrant performance, including fireworks in the shape and colour of the five Olympic rings, briefly lit up the skyline of the city of over 14 million people.
The IOC said in a statement on Friday the qualification event would take place in Amman from March 3 to 11.
Tokyo 2020 organisers are determined to stage Olympic swimming events in the city centre Odaiba Marine Park venue despite continuing confusion over the water quality.
Tokyo officials have said they intend to put on the Games in 2021 even if the pandemic has not eased substantially.
Australian swimming great Ian Thorpe says athletes should not put their Olympic dreams before their health in deciding whether to compete at the Tokyo Games as global health authorities battle to contain the spread of the new coronavirus. A number of international sports events have been hit by the coronavirus, with some competitions being postponed and others cancelled outright, and there are concerns that the outbreak might scupper the Tokyo Olympics.
The Japanese and Tokyo metropolitan governments, local organisers and the International Olympic Committee (IOC) have all sought to quash persistent speculation that the Games could be cancelled or postponed.