The following is a chronology of major events related to the Tokyo Olympics closing on Sunday.

Sept. 7, 2013 -- Tokyo wins bid to host 2020 Summer Games.

International Olympic Committee President Jacques Rogge shows a card with the name of Tokyo as the Japanese capital was chosen as the city to host the 2020 Summer Olympics at the International Olympic Committee's general session in Buenos Aires on Sept. 7, 2013. (Kyodo)

Jan. 24, 2014 -- Tokyo Olympic organizing committee set up.

Oct. 16, 2019 -- International Olympic Committee announces plan to relocate marathon and race walking events to Sapporo due to heat concerns.

Jan. 30, 2020 -- World Health Organization declares coronavirus outbreak global health emergency.

March 11 -- WHO calls coronavirus outbreak "pandemic."

March 12 -- Olympic flame-lighting ceremony held at site of ancient Olympics in Greece without spectators.

The Tokyo Olympic flame lighting ceremony gets underway at the archaeological site of Olympia in Greece on March 12, 2020. (Kyodo)

March 20 -- Olympic flame arrives in Japan.

March 24 -- Then Japanese Prime Minister Shinzo Abe, IOC President Thomas Bach agree to delay Tokyo Olympics and Paralympics by one year.

Japanese Prime Minister Shinzo Abe speaks to reporters at his official residence in Tokyo on March 24, 2020, after holding telephone talks with International Olympic Committee President Thomas Bach. Abe said they agreed to postpone this summer's Tokyo Olympics due to the coronavirus pandemic. (Kyodo) ==Kyodo

March 30 -- IOC, Japanese organizers agree to hold Olympics from July 23 to Aug. 8, 2021.

March 20, 2021 -- Organizers decide to stage Tokyo Olympics and Paralympics without overseas spectators due to pandemic.

March 25 -- Tokyo Olympic torch relay begins in Fukushima Prefecture.

Members of the Nadeshiko Japan soccer team that won the 2011 Women's World Cup start the torch relay from the J-Village sports complex in Fukushima Prefecture on March 25, 2021. (Kyodo)

May 28 -- Prime Minister Yoshihide Suga says he will consider allowing spectators at venues.

June 17 -- Japanese government decides to end state of emergency in Tokyo.

June 18 -- Japan's top COVID-19 adviser says staging Tokyo Olympics without spectators "desirable."

June 21 -- Organizers set Tokyo Olympic spectator cap at 10,000 per venue.

July 8 -- Organizers agree to hold Olympics without spectators in and around Tokyo following government's decision to declare state of emergency.

July 12 -- Tokyo's fourth state of emergency takes effect.

July 23 -- Tokyo Olympics open.

Tennis player Naomi Osaka is pictured after lighting the Olympic cauldron during the opening ceremony of the Tokyo Olympics at the National Stadium in Tokyo on July 23, 2021. (Kyodo) ==Kyodo

Aug. 5 -- Tokyo's daily COVID-19 cases hit another record-high of 5,042, more than double from before the start of the Olympics.

Aug. 8 -- Tokyo Olympics close.