Eighth celebration of the UNESCO International Day of Light.




We are counting down the days to May 16, 2025, which will see the eighth celebration of the UNESCO International Day of Light, one of the most anticipated science events on the global calendar of United Nations observances. Since its inception in 2018, over 2800 activities and events have taken place in more than 100 countries, reaching and inspiring millions worldwide. We would like to thank you all for the hard work that has made the International Day of Light such a success.
As you will see from our global calendar, activities are being organised worldwide for 2025, and we look forward to some fantastic celebrations. Indeed, some have already taken place; One of the unique features of the International Day of Light is the way it brings together so many diverse communities, and this is reflected in the tremendous range of topics that will be celebrated - science and technology, lighting and lighting quality, astronomy, education and more.

In addition, 16 May is also the United Nations International Day of Living Together in Peace, and we encourage organisers of events on 16 May to consider including broader discussions of this theme as well, perhaps linking with the cultural association of light as a symbol of inclusion and hope.

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