Pomp and ceremony will mark Malcolm Turnbull's first full day in India.
The prime minister landed in New Delhi late on Sunday for a four-day visit to the Indian capital and commercial centre Mumbai.
His first official trip to the subcontinent has all the trappings of a state visit, starting with a ceremonial welcome at the presidential palace and a wreath laying at Gandhi's memorial.
Later in the day he will be the guest of honour at a state banquet and be received by the president and vice-president.
But the real attraction is the chance to spend plenty of time with Indian Prime Minister Narendra Modi.
Malcolm Turnbull hopes a day of one-on-one time with the leader of the world's fastest-growing economy will take Australia's relationship with India to the next level.
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He met Mr Modi on the sidelines of the 2015 and 2016 G20 summits and now they'll get some serious face time.
Mr Turnbull was all praise for his counterpart and the "giant, vibrant democracy" as he departed Papua New Guinea.
"What a remarkable story India presents," Mr Turnbull said.
"This is one of the great achievements of our times."
Mr Turnbull said Mr Modi was determined to super-charge India's growth into the 21st century.
India used to lament its low rate of growth compared to China, but thanks to the enterprise and energy of its people that's no longer the case.
"India is showing it can grow at a rapid rate and that is offering enormous opportunities for Australia," he said.
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Talks between the pair are expected to encompass the political relationship, trade, strategic ties, international security issues, science and innovation, and energy.
Mr Turnbull told reporters in PNG he and Mr Modi will be talking about the importance of energy exports to India.
Australian coal has a very big role to play in India's plan to expand power across the country, he said.
India is Australia's fifth largest trading partner, with two-way trade worth $19 billion in 2015/16, but there is significant scope to expand.
However, it's unlikely a bilateral trade deal will be sealed during Mr Turnbull's visit as talks have largely stalled since mid-2016 with the government saying it's now doing a stocktake.
A major sticking point for the Indians is labour mobility.
They'd like to see Australia ease restrictions on foreign workers, particularly in IT services, in exchange for opening up agricultural markets.
But more than goods, India wants "Australian brains" exported to it - technology, ways to boost agricultural productivity, logistics management, and education services.
Australia views India's growing economic clout - it's on track to be the world's third largest economy by 2030 - as also translating into a bigger strategic reach.
The Australian Financial Review on Monday reported that former Foreign Affairs and Trade head Peter Varghese will conduct an inquiry into the economic potential of engaging with India.
