The NDD has emerged as the world’s largest public health campaign for treatment of intestinal parasitic worms. After the unprecedented coverage of NDD with national coverage of more than 89 million children, the MoHFW mandated the observation of the NDD at pan-India level on 10 February 2016. The NDD will be followed by a mop-up day on 15 February to cover children who might be left out earlier due to sickness or absenteeism, and will ensure maximum coverage with optimal utilisation of resources. In addition, the fixed day strategy will prioritise deworming within anganwadi and school health programs, increase awareness, and standardize campaign messages across the country.