The President Mrs. Pratibha Devisingh Patil will arrive in Coimbatore in Tamil Nadu tonight to inaugurate the World Classical Tamil Conference. <br/> <br/>Governor of Tamil Nadu Mr. Surjit Singh Barnala will arrive in the afternoon. The five-day Tamil conference will begin on Wednesday. <br/> <br/>Chief Minister of Tamil Nadu Mr. M.Karunanidhi who arrived on Monday is camping in Coimbatore to oversee the preparations of the World Classical Tamil Meet. <br/>