The body claims the extension "reflects lots of requests from the bidders in need of more time for their internal processes".

Bid files must be submitted by May 19, with an expert group’s evaluation scheduled for June 8.

Presentation of bids and host city selection is due to take place on June 22, during the WTF Council meeting in Muju in South Korea.

Among the events on offer for 2018 are the World Taekwondo Junior Championships, with the chosen hosts also being granted the right to organise the qualification tournament for the 2018 Summer Youth Olympic Games in Argentina’s capital Buenos Aires.

Next year’s World Taekwondo Grand Prix Final and World Taekwondo Team Championships, which can be hosted in conjunction with one another, are also up for grabs.

The events available in 2019 are the World Para Taekwondo Championships and the first and third legs of the World Taekwondo Grand Prix Series, while those in 2020 are the World Taekwondo Junior Championships, the World Taekwondo Grand Prix Final and the World Taekwondo Team Championships.

Bid registrations can be submitted to the WTF event department at [email protected].

Upon completion of registrations, it is claimed more than a month of of interactive consultation will follow to assist with successful submission of bid files.

Information on the format of bid registrations can be found by clicking here.

Earlier this month, the WTF announced host cities for five major events.

The venues were confirmed at an extraordinary WTF Council meeting in Thailand's capital Bangkok, where the organisation also revealed they will soon unveil a new logo.

Russian capital Moscow will host the first leg of the World Taekwondo Grand Prix Series this year, between August 4 and 6.

It was also agreed that the second leg of the circuit will be held in Moroccan city Marrakech between September 22 and 24.

Egypt will stage this year's World Taekwondo Cadet Championships with Sharm-el-Sheikh picked as host for the competition between August 23 and 27.

Two events in 2018 have also been awarded to Taiwan's capital Taipei.

The city will stage the World Taekwondo Poomsae Championships between November 15 and 18 and the second leg of the Grand Prix season between September 20 and 22.

The new logo will be revealed at the WTF World Championships in Muju, where action is set to begin on June 24.