May 12 marks an important international day that celebrates the role and significance of light in our lives. The International Day of Light, also known as IDL, was established by the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 2018. This day aims to raise awareness about light-based technologies and their impact on our daily lives. It also celebrates Albert Einstein’s groundbreaking theory of light, which revolutionized how we see and understand the world. Since its inception, the International Day of Light has been observed annually on May 12. Each year, a theme is chosen to reflect on how light plays a vital role in our society. The theme for 2021 is ‘The Science of Light: Illuminating the Future.’ This theme highlights the importance of scientific research and innovation in the field of light-based technologies. On this day, activities and events are organized worldwide to celebrate the scientific and cultural aspects of light. One of the main objectives of the International Day of Light is to promote the understanding and appreciation of light-based technologies and their impact on our daily lives. Light is an essential component of our existence, from the natural sunlight that sustains life on Earth to the artificial light sources that brighten our homes and workplaces. The discovery and understanding of light have led to groundbreaking inventions, such as electric lights, lasers, and fiber optics, which have revolutionized communication, medicine, and entertainment. These advancements have not only enhanced the quality of our lives but also opened up new possibilities and opportunities for economic and social development. The COVID-19 pandemic has highlighted the crucial role of light in healthcare settings, with the use of UV light to disinfect surfaces and the development of light-based medical equipment to diagnose and treat the virus. The International Day of Light also serves as a reminder of the importance of preserving and protecting our planet’s resources, including light, for future generations. Light pollution is a growing concern, with the excessive and unnecessary use of artificial light sources leading to energy waste and detrimental effects on wildlife and human health. This day encourages individuals and organizations to take action to reduce light pollution and promote sustainable practices. The observance of IDL is not limited to just scientists and researchers but also involves the participation of artists, educators, and the general public. Through lectures, demonstrations, and exhibitions, people of all ages and backgrounds can learn and engage in the wonders of light. Additionally, this day also presents an opportunity to reflect on the cultural and artistic heritage of light in various cultures and civilizations. The use of light in art, architecture, and religious practices have been vital in shaping our beliefs, traditions, and collective memory. The International Day of Light is also a reminder to celebrate and preserve the diversity and beauty of light in our world. On this day, social media platforms are abuzz with the hashtag , as well as tweets and posts highlighting the significance and impact of light. Through online campaigns and community initiatives, the message of light and its potential for innovation, education, and sustainability is spread worldwide. In conclusion, the International Day of Light is an important global event that highlights the essential role of light in our lives and the need to harness its power for the betterment of humanity. It is a time to come together and celebrate the achievements in the field of light-based technologies while also recognizing the challenges and opportunities that lie ahead. So let’s shine a light on May 12 and join the movement towards a brighter and sustainable tomorrow. 
May 12 – International Day of Light: Shining a Light on a Bright Future
