Chennai, July 25 -- Prime Minister Narendra Modi will be in Tamil Nadu this Sunday to celebrate the birth anniversary of the Chola emperor Rajendra Chola and join the Aadi Thiruvathirai Festival which has been on going from 23rd on its final day on to 27th July at Gangaikonda Cholapuram in Ariyalur district. The celebration also commemorates 1,000 years of Rajendra Chola's legendary maritime expedition to South East Asia and the commencement of the construction of the iconic Gangaikonda Cholapuram temple, a magnificent example of Chola architecture, Press Information Bureau said. "This is a historic moment that awaits Tamil Nadu & Bharat," former state BJP president K Annamalai posted on X adding this is in line with PM's reverence for Tami...