International Day of Light

International Day of Light History

International Day of Light highlights the unique role that light plays in our lives, its transformative nature, its impact on science, culture, and arts, and ways in which it drives economic growth and sustainable development.

Initially endorsed in 2017, International Day of Light is based on the highly successful International Year of Light and Light-based Technologies celebrated in 2015, which saw more than 13,000 events in 147 countries take place. This global initiative was the catalyst that led to the proclamation of the annual event by the United Nations General Assembly. The day is commemorated with events focused on public outreach, art installations, academic conferences, and educational resources, further advancing people's understanding of the importance of light technology and its necessity in creating a better, more sustainable future.

For New Zealanders, International Day of Light gives an opportunity to learn about the many ways light impacts our lives and our environment. From solar energy to the magical beauty of the Southern Lights, Aotearoa is a land where light plays a crucial part in shaping our world. International Day of Light is celebrated each year on 16th May.

International Day of Light facts

• Light travels in a straight line. If objects are in its path, they will cause the light to bend or refract.
• The speed of light is 186,282 miles or 299,792 km per second.
• Radiant light can be produced through various processes, such as incandescence (light resulting from heat), fluorescence (light emitted by a substance when it absorbs light or other electromagnetic radiation), chemiluminescence (light from a chemical reaction), and bioluminescence (light produced by a living organism).
• New Zealand is committed to promoting renewable energy sources, and around 82% of the country's electricity comes from renewable resources, such as hydropower, geothermal, and wind energy.
• Light holds significant importance in Maori culture and mythology. According to Maori legend, the god Tane separated his parents, Ranginui (the sky father) and Papatuanuku (the earth mother), to bring light into the world.

In the News and Trending in NZ for International Day of Light

Top things to do in NZ for International Day of Light

• Discover events near you. UNESCO hosts activities and events for people of all ages and backgrounds. They participate globally so that everyone around the world can gain an appreciation for the central role of light in science and culture.
• Stay informed about upcoming news. UNESCO periodically releases news about scientific progress involving light technology.
• Visit the Lighthouse: New Zealand has several historic lighthouses. You could visit one of these like the Cape Palliser Lighthouse or the Cape Reinga Lighthouse. These lighthouses serve as a great reminder of the crucial role light plays in guiding us.
• Attend Dunedin Auroras - A festival of light around midwinter solstice, including scientific talks and exhibitions.