Prime Minister Narendra Modi today flew into Hangzhou in China for the crucial G20 summit and talks with top world leaders, including one with Chinese President Xi Jinping on irritants in bilateral ties like India's NSG bid and the CPEC which runs through Pakistan administered Kashmir (PoK).
Issues like climate change, terrorism and trade are going to dominate discussions at the summit that is to be held on September 4-5.
Modi is scheduled to call on the Chinese President on Sunday morning at 7 am IST. Senior Obama adviser Brian Deese said the US President was expected to meet the Indian Prime Minister on the sidelines of a Group of 20 nations meeting.
The Indian Prime Minister is also scheduled to meet Australian counterpart Malcolm Turnbull at 10 am IST tomorrow.
Earlier today, Obama met Jinping on the sidelines of the summit scheduled to begin tomorrow. The United States joined China to formally ratify the Paris agreement to curb climate-warming emissions, the world's two biggest economies said today, which could help put the pact into force before the end of the year.
Obama and Jinping submitted their plan to join the agreement to UN Secretary-General Ban Ki-Moon who is in China to witness the announcement.
Deese said the joint declaration should push other countries to formally join the agreement. India is also poised to join the agreement this year, he said.
China and the US together are responsible for about 40 per cent of the world's emissions so their ratification of the international legal document is viewed crucial.
The Paris Agreement is the third attempt to address the issue of climate change after the 1992 UN Framework Convention on Climate Change and the 1997 Kyoto Protocol.