The focus of the summit will be counter-terrorism, security, trade and connectivity.
In an unprecedented event, all the 10 ASEAN leaders will also be the chief guests at the Republic Day parade tomorrow.
The Prime Minister, yesterday, held separate bilateral meetings with leaders of three ASEAN nations - Myanmar, Vietnam and Philippines.
Prime Minister Modi met Myanmar's State Counsellor Aung San Suu Kyi, his Vietnamese counterpart Nguyen Xuan Phuc and Philippines President Rodrigo Roa Duterte.
The Prime Minister will hold a total of nine bilateral meetings with leaders of ASEAN countries on the sidelines of the Summit. (ANI)