Dragons prop James Graham.

The Rabbitohs and Dragons will head to Mudgee on Saturday, February 29 for the latest instalment in their time honoured Charity Shield rivalry.

It will be the third time Glen Willow Stadium has hosted the annual pre-season game as part of a four-year partnership between Mid-Western Regional Council, the Rabbitohs and the Dragons.

The traditional rivals have drawn huge crowds to the Charity Shield in the past two seasons and 2020 is sure to be another huge weekend in Mudgee. 

Meanwhile, the Sharks and Bulldogs will face off in an historic trial in Papua New Guinea a week prior to that on February 22.

The Port Moresby clash will be the first time two NRL clubs have played a trial in PNG, with Brisbane having already faced Intrust Super Cup side the PNG Hunters there previously.

The NRL said the move is part of a government-supported program that will bring trials to the Pacific in each of the next three seasons.

Teams will be involved in programs promoting social inclusion, participation, equality and health and wellbeing in the lead-up to the match, according to the NRL.

"This is an exciting and valuable step for the game," NRL CEO Todd Greenberg said.

"We know so many of our players were born in Pacific nations and are idolised in nations like Papua New Guinea who have a genuine passion for rugby league."

Bulldogs CEO Andrew Hill and Sharks CEO Richard Munro were each pleased to have their clubs involved in the fixture.

"To have been invited to take part in this match and help promote the sport in this important part of the world is fantastic news for our club,'' Hill said.

"To have the opportunity to help grow the game in this part of the world is both rewarding and important. Our core club values of family and inclusiveness are acknowledged as major elements to help grow the game and the value that rugby league can play in PNG."

Munro described the move as "ground-breaking".

"Our players are looking forward to going to PNG and working with the local communities to grow the game," he said.

"It will be a rewarding and valuable week for our club and for the people of PNG."

In other trial fixtures so far announced, the Warriors will take two matches to provincial North Island venues with Palmerston North and Rotorua to host the Storm and Wests Tigers respectively on February 22 and March 1.

NRL trial dates