We know APJ Abdul Kalam was a president of India, but do you know that Switzerland celebrates Science Day in their country curtsy our great scientist. The father of India’s missile programme had visited Switzerland back in 2006, on May 26. Upon his arrival the country declared May 26 as Science Day. However, in India, National Science Day is celebrated on February 28 each year. This is to mark the discovery of the Raman effect by Indian physicist Sir Chandrashekhara Venkata Raman for which he was awarded the Nobel Prize in Physics in 1930