World Asteroid Day is an annual global event which is held on June 30, the anniversary of the Tunguska event in 1908 when a meteor air burst levelled about 2,150 km2 (830 sq mi) of forest in Siberia, Russia. The event aims to raise awareness about asteroids and what can be done to protect the Earth, its families, communities, and future generations from a catastrophic event. 1855- The Santhal Rebellion 1855, also known as the Santhal Hul, was a tribal uprising against British colonial rule and exploitative practices in India. 1905- Albert Einstein sends the article On the Electrodynamics of Moving Bodies, in which he introduces special relativity, for publication in Annalen der Physik. 1914- Mahatma Gandhi was arrested for the first time while agitating for the rights of Indians in South Africa. 1937- The world's first emergency telephone number, '999' is introduced in London. 1947- The members of the Boundary Commission for the partition of Bengal and Punjab were announce...