With more than 50,000 people registering for the Houston event and the numbers expected to climb, the organisers have asked those who may not be able to attend to cancel and so open up slots for the hopeful, and cautioning those coming from afar to book their air tickets soon.
In addition to Modi's address, the programme is also expected to include a cultural programme that showcases the Indian-American community and will be broadcast live online and on television channels, reaching over 1 billion people across the US and India, the organisers said.
"Indian-Americans are an 'organic bridge' between the world's two largest democracies," he said.
The gates of NRG Stadium will open at 6 am to accommodate and seat 50,000 people by 9 am, after which cultural programme will begin and continue till 10:30 am, and will be broadcast live in Hindi, English and Spanish languages followed by the address of the two leaders.
This is for the first time in recent history that the leaders of the two largest democracies would be addressing a joint rally anywhere in the world.