Islamabad: President Asif Ali Zardari has accorded approval to summon National Assembly (NA). According to Aiwan-e-Sadr NA session has been summoned at 5 p.m on September 01. Important national issues will come under discussion in NA session. President has summoned NA on the advice of Prime Minister (PM) Shehbaz Sharif. It is pertinent to mention here Speaker NA has issued directives to celebrate Rabi ul Awal in forceful way. An exhibition on calligraphy will be held in parliament house.