Asteroid Day is an annual global event which is held on the anniversary of the Siberian Tunguska event that took place on June 30, 1908, the most harmful known asteroid-related event on Earth in recent history. The United Nations has proclaimed it be observed globally on June 30 every year in its resolution. Asteroid Day 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. For example, 2014 HQ124, discovered April 23, 2014, went past 1,250,000 km from Earth the same year, June 8th, only 46 days after discovery, and 2015 TB145, went past at 490,000 km only 21 days after its discovery.
The workgroup of Asteroid Day created a declaration called "100X Declaration", which appeals to all scientists and technologists who are supporting the idea of saving the earth from asteroids, but not only specialists are asked to sign, everyone can sign this declaration. Today, the 100X Declaration has been signed by more than 22,000 private citizens. More than 1M asteroids have the potential to impact Earth and through all the available telescopes worldwide, we have discovered only about one percent. The 100X Declaration calls for increasing the asteroid discovery rate to 100,000 per year within the next 10 years. “The more we learn about asteroid impacts, the clearer it became that the human race has been living on borrowed time,” remarked Brian May. “Asteroid Day and the 100X Declaration are ways for the public to contribute to an awareness of the Earth’s vulnerability and the realization that Asteroids hit Earth all the time.” Asteroid Day would the vehicle to garner public support to increase our knowledge of when asteroids might strike and how we can protect ourselves.” The main three goals are:
Employ available technology to detect and track Near-Earth Asteroids that threaten human populations via governments and private and philanthropic organisations.
A rapid hundred-fold acceleration of the discovery and tracking of Near-Earth Asteroids to 100,000 per year within the next ten years.
Global adoption of Asteroid Day, heightening awareness of the asteroid hazard and our efforts to prevent impacts, on June 30 - With the United Nations recognition, this action item has been achieved.
In February 2016, Romanian astronaut Dumitru Prunariu and the Association of Space Explorers submitted a proposal to the Scientific and Technical Subcommittee of the United Nations which was accepted by the subcommittee and in June 2016 the United Nations Committee on the Peaceful Uses of Outer Space included the recommendation in its report. The report of the Committee was presented for approval to the United Nations General Assembly's 71st session, which it approved on December 6, 2016. In its resolution the United Nations declares "30 June International Asteroid Day to observe each year at the international level the anniversary of the Tunguska impact over Siberia, Russian Federation, on 30 June 1908 and to raise public awareness about the asteroid impact hazard."