Islamabad (Online) - President Asif Ali Zardari has summoned the National Assembly session on Friday at 10.00 am. Federal Minister for Finance Hina Rabbani Khar will present the budget for up coming financial year 2009-2010 on June 13 and the budget session will continue through out this month. Sources told Online that proper debate on budget will start from June 16 and Opposition leader in the NA Ch Nisar will start debate.