INTERNATIONAL DAY

International Day of Light

16.05

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We celebrate the International Day of Light on May 16.

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DAY OF LIGHT

Photo credit, from top to bottom: Sebastian Kanczok, Red Charlie, Fabian Struwe.

Light plays a central role in our lives. On the most fundamental level, through photosynthesis, light is at the origin of life itself.

The study of light has led to promising alternative energy sources, lifesaving medical advances in diagnostics technology and treatments, light-speed internet and many other discoveries that have revolutionized society and shaped our understanding of the universe. These technologies were developed through centuries of fundamental research on the properties of light – starting with Ibn Al-Haytham’s seminal work, Kitab al-Manazir (Book of Optics), published in 1015 and including Einstein’s work at the beginning of the 20th century, which changed the way we think about time and light.

The International Day of Light celebrates the role light plays in science, culture and art, education, and sustainable development, and in fields as diverse as medicine, communications, and energy. The celebration will allow many different sectors of society worldwide to participate in activities that demonstrate how science, technology, art and culture can help achieve the goals of UNESCO – building the foundation for peaceful societies.

The International Day of Light is celebrated on 16 May each year, the anniversary of the first successful operation of the laser in 1960 by physicist and engineer, Theodore Maiman. This day is a call to strengthen scientific cooperation and harness its potential to foster peace and sustainable development.

A WORD FROM THE DIRECTOR-GENERAL

“From the birth of the universe to the creation of all kinds of new technologies, from X-rays to radio waves, in fields as diverse as medicine, agriculture, energy, optics, and countless others, light has shaped – and continues to shape – our world. By understanding light, we are able to achieve the greatest of scientific and technological progress. All its natural benefits and its scientific and technological applications make light an essential part of the daily life of our societies; these benefits and applications make light an important issue for the Sustainable Development Goals of the 2030 Agenda.”

— Audrey Azoulay, Director-General of UNESCO, on the occasion of the International Day of Light 2019

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How to get involved

International days are celebrations and calls to action. They are for everyone to participate in. This is how you can take part in an International Day in three simple steps.

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Why are International Days important? They provide unique opportunities to transmit UNESCO values to the world.

INTERNATIONAL DAYS

International days also provide a unique opportunity to engage citizens on global issues, to mobilise political will and resources to address these problems, but also to celebrate and reinforce the achievements of humanity as well as remember some of our darkest times as they guide us towards building a better world.

The United Nations International Days are for everyone, all around the globe. Because they are open, you can have an important role to play in them. NGOs, universities, schools, press and more will be putting together campaigns, events, and calls to action worldwide to provide further opportunities to engage, learn, and transmit the values and knowledge associated with each International Day. They serve as an important vehicle to connect the local to the international.

At their root, UN International Days contribute to the achievement of the purposes of the UN Charter and promote awareness of and action on important political, social, cultural, humanitarian or human rights issues. International days are at the heart of the United Nations Charter. They work to reaffirm faith in fundamental human rights, in the dignity and worth of the human person, in the equal rights of men and women to practice tolerance and live together in peace with one another as neighbours, and to unite our strength to maintain international peace and security.

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