National Mathematics Day is celebrated on 22nd December every year to mark the birth anniversary of the great Indian mathematician, Srinivasa Ramanujan. This day was announced by the former Prime Minister of India, Dr. Manmohan Singh, in 2012 अंतरराष्ट्रीय मानव एकता दिवस संक्षिप्त तथ्य कार्यक्रम नाम अंतरराष्ट्रीय मानव एकता दिवस (International Human Unity Day) कार्यक्रम दिनांक 20 /