India will celebrate 25th anniversary of its relations with the Islamic Development Bank (IDB) with a major silver jubilee program to be held in the Saudi capital tomorrow, Arab News reported today. "This is the first social and educational event being organized by the IDB and India after the historic visit of Custodian of the Two Holy Mosques King Abdullah Bin Abdulaziz," said Amanullah Khan, chairman of India's Students Islamic Trust (SIT), the Delhi-based counterpart organization of the IDB.