In China, Indian Ambassador Ashok K Kantha hoisted the tri-colour at the Indian Embassy in Beijing and spoke of "remarkable progress" made in India-China relations.
Kantha, who read the President Pranab Mukherjee's address, said 2014 witnessed remarkable dynamism and progress in the bilateral relations.
"After taking over power Narendra Modi Government conveyed clearly that it attached the highest priority to developing relations with China. The Chinese government also reached out, and as a result, we could make tangible gains in bilateral relations," he said.
The two countries have strengthened ties in all areas, including in the political, strategic, economic and cultural spheres, Kantha said.
"Several new areas of cooperation emerged during President Xi Jinping's visit to India, including in railways and industrial parks, where we are seeing good progress," he said.
"We have agreed on key initiatives in the fields of smart cities, space, civil nuclear energy, cultural exchanges and tourism," he said.
The event was enlivened by music and dance performances by Indian and Chinese artists.
In Bangkok, India's Ambassador to Thailand Harsh Vardhan Shringla hoisted the national flag at the Embassy premises where over 400 people cheered as rose petals dropped when the Tri-colour unfurled to the strains of the national anthem.
Patriotic songs, poetry recital and cultural programmes were staged after Shringla read out excerpts of the President's address to the nation.
In Hanoi, India's envoy to Vietnam Preeti Saran held an open house for the Indian community. She hoisted the flag and then read the President's address.