Why National Science Day is celebrated? This day marks the epoch-making discovery of Raman Effect by Indian physicist Chandrasekhara Venkata Raman (CV Raman) on February 28, 1928. In 1930, for this discovery he was awarded with the Nobel Prize in Physics. In 1986, National Council for Science andTechnologyCommunication (NCSTC) demanded the Union Government to assign February 28 every year as the National Science Day for India. In 2000, the first National Science Day was celebrated on February 28, 2000. In 2013, the American Chemical Society designated the Raman Effect as an International Historic Chemical Landmark. Theme for the National Science Day 2013 Genetically Modified Crops and FoodSecurity. Theme for the National Science Day 2014 Fostering Scientific Temper andEnergy conservation.