Trump attends a Diwali celebration at the White House India's ambassador to the US Vinny Kwatra was among those present in the Oval Office for the celebration. The tradition of celebrating Diwali was started by President George W. Bush in 2003. In 2009, President Barack Obama became the first president to light a dia (lamp) at the White House, during a ceremony in the East Room. Since then, lamp-lighting ceremonies have been held at various locations in the White House, including the Oval Office and the Roosevelt Room.