The International Day of Light is observed worldwide every May 16, commemorating the anniversary of the first successful laser operation in 1960 by Theodore H. Maiman. Established by UNESCO in 2017, this annual UN observance aims to promote international cooperation in various fields related to light and light technology, including science, medicine, communications, and energy. The day highlights the vital role of light in processes such as photosynthesis and its extensive applications across industries. UNESCO organizes events globally to encourage collaboration among scientists, industry leaders, and policymakers, focusing on sustainable development and engaging young minds in addressing global challenges through light technology. The observance underscores the importance of providing access to innovation and education, particularly in developing countries.