Got an idea for a new holiday? Let us know!
Submit Holiday

International Day of Light

Let your light shine bright on International Day of Light and join the global celebration of this vital source of energy, knowledge, and innovation.
Weekly And Monthly Reports - Techcloud X Webflow Template
When it is?
May 16
Location Icon

Get ready to shine a light on the importance of science and technology on International Day of Light, which falls on May 16th every year. This day was officially declared by the United Nations in 2017 to celebrate the role that light plays in our daily lives and its impact on various fields such as medicine, communications, and energy. From lasers to LEDs, light has revolutionized the way we live and continues to push boundaries in research and innovation. So let's take a moment to appreciate this amazing natural phenomenon and all the ways it enhances our world!

History of International Day of Light

International Day of Light Dates

International Day of Light Timeline

<div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1800</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Invention of Electric Light</div><div class='timeline-text'>In the early 1800s, Humphry Davy invented the electric light which led to vast advancements in technology, communication, and visibility in the dark.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1917</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Einstein's Quantum Theory of Light</div><div class='timeline-text'>Albert Einstein's Quantum Theory of Light, which demonstrates that light is made up of particles called photons, broadens our understanding of light's functionality.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1960</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Invention of Laser</div><div class='timeline-text'>Theodore H. Maiman invents the first working laser, contributing to advancements in medical treatments, communication, and manufacturing processes.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>2009</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Year of Astronomy</div><div class='timeline-text'>United Nations declares 2009 as International Year of Astronomy which focuses heavily on the importance of light in studying celestial bodies and phenomena.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>2015</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>International Year of Light</div><div class='timeline-text'>In 2015, United Nations declared the year as the International Year of Light and Light-based Technologies to emphasize the significant role of light in sustainable development.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>2017</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Declaration of International Day of Light</div><div class='timeline-text'>United Nations officially designates May 16 as the International Day of Light, honoring the role that light and light-based technologies play in our lives and future of sustainable development.</div></div></div>

How to Celebrate International Day of Light

<div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>1</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Host a light-themed party</h3><p id='' class='facts-text'>Decorate your home with different types of lights and invite friends over for a light-themed party. You can serve light snacks and drinks and even have a dance party with colorful lights.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>2</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Attend a light festival</h3><p id='' class='facts-text'>Check if there are any light festivals happening in your area and go explore the beautiful light displays. You can also participate in activities like lantern making or lantern parades.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>3</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Learn about the science of light</h3><p id='' class='facts-text'>Take a trip to a science museum or planetarium to learn about the properties of light and its role in our everyday lives. You can also watch educational videos or read books about light.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>4</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Create light art</h3><p id='' class='facts-text'>Get creative and make your own light art using different materials like glow sticks, LED lights, or flashlights. You can even have a contest with friends to see who can create the most impressive light art.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>5</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Donate to a charity focusing on light-related issues</h3><p id='' class='facts-text'>Support a cause related to light by donating to a charity that provides solar lighting for communities without electricity or supports research on light-related diseases. Your contribution can make a positive impact on someone's life.</p></div></div>

Why We Love International Day of Light

<div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>A</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>It celebrates the importance of light in our lives</h3><p id='' class='whywelove-text'>The International Day of Light is a day to recognize and appreciate the role that light plays in our daily lives. From providing us with energy and warmth, to enabling us to see and experience the world around us, light is truly essential for our existence.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>B</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>It promotes advancements in science and technology</h3><p id='' class='whywelove-text'>On this day, organizations and individuals come together to promote the importance of light-based technologies. These include lasers, fiber optics, LEDs, and other devices that have greatly improved our quality of life and continue to drive innovation in many fields.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>C</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>It inspires creativity and artistry</h3><p id='' class='whywelove-text'>Light has always been an important tool for artists and creative minds. On International Day of Light, we celebrate this by showcasing various forms of light-based art such as photography, light installations, and projections. It's a day to appreciate the beauty and power of light in all its forms.</p></div></div>

Discover 5 Illuminating Facts for International Day of Light

<div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>1</p></div><div class='facts-core-content'><h3 class='facts-title'>Light Travels Faster Than Anything Else</h3><p class='facts-content'>With a blistering speed of about 299,792 kilometers per second, light travels faster than anything in the universe — a fact that ultimately defines our understanding of time and space.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>2</p></div><div class='facts-core-content'><h3 class='facts-title'>Light Contains Energy</h3><p class='facts-content'>Light carries energy and momentum which can be converted into heat or electrical energy — a principle that's harnessed in solar power technologies.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>3</p></div><div class='facts-core-content'><h3 class='facts-title'>Colors are Derivative of Light</h3><p class='facts-content'>We perceive colors because light waves are refracted and reflected in different ways by different materials, resulting in hues that our eyes can detect and our brains interpret.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>4</p></div><div class='facts-core-content'><h3 class='facts-title'>Light-based Technologies are Revolutionizing Medicine</h3><p class='facts-content'>From laser surgeries to optical imaging and photodynamic therapy for cancer treatment, light-based technologies have dramatically improved diagnostic and treatment options in healthcare.</p></div></div><div class='facts-item'><div class='facts-number-wrapper'><p class='facts-number'>5</p></div><div class='facts-core-content'><h3 class='facts-title'>Bioluminescence is a Natural Light Phenomenon</h3><p class='facts-content'>Some organisms, such as fireflies and certain species of deep-sea fish, produce light naturally through a process called bioluminescence, helping them communicate, attract mates, or ward off predators.</p></div></div>

International Day of Light FAQs

When is International Day of Light?

International Day of Light is celebrated on May 16 every year. In 2024, it will fall on a Thursday.

International Day of Light Dates



May 16



May 16



May 16



May 16



May 16


Special Interest Holidays