Events can now be registered worldwide
Registrations for events on International Day of Light on 16 May 2026 are now open again in the global calendar for the whole year.
The online registration form has been optimised: it is now very easy to register multiple events for an organisation. Alternatively, a form can be downloaded, filled in and sent to the organisers by email.
Information about UNESCO Action Day is also available on the official social media channels:
@InternationalDayOfLight on Instagram, @InternationalDayOfLight on Facebook and @International Day Of Light on LinkedIn.
International Day of Light is a global initiative that each year focuses on the appreciation of light and its role in science, culture and art, education and sustainable development, as well as in fields as diverse as medicine, communication and energy. The broad theme allows many different sectors of society to participate in activities worldwide.