President Ram Nath Kovind will embark on a four-day visit to Assam and Mizoram from today. The President will address the 61st Annual Conference of Bodo Sahitya Sabha at Tamulpur in Assam tomorrow.<br />''<br />'' He will also grace the valedictory function of North East Festival at Guwahati, organized by the Ministry of DoNER as a part of 'Azadi ka Amrit Mahotsav'. On Thursday, the President will address the 16th Convocation of the Mizoram University at Aizawl. <br />''<br />