A seven-day national mourning will be declared by the Centre, Union Home Secretary L C Goyal said. Both the Houses of Parliament are likely to make obituary references and adjourn as a mark of respect to his memory. Avul Pakir Jainulabdeen Abdul Kalam rose from humble origins to become the President in the most unexpected manner during the NDA government under Atal Bihari Vajpayee after an all party consensus minus the left parties that saw him through in an election which he won handsomely.