This document provides information about Teachers' Day celebrations around the world and the origins of Teachers' Day in India. It notes that Teachers' Day is celebrated on October 5th in 19 countries and February 28th in 11 countries. In India, Teachers' Day is celebrated on September 5th in honor of Dr. Sarvepalli Radhakrishnan, who was a great teacher, philosopher, and the second President of India. The day marks his birth anniversary. Dr. Radhakrishnan suggested dedicating September 5th to Teachers' Day instead of celebrating his own birthday in recognition of teachers and their contributions.