In 2010, the United Nations decided to honour this 'great scientist' on his 79th birth anniversary and declared his birthday on October 15 as the World Students' Day. Since then, October 15 is observed as a day for students all around the world. He received honorary doctorates from 40 universities. In 2005, Switzerland declared 26 May as "Science Day" to commemorate Kalam's visit to the country.