Dear Supporters of the International Day of Light
We are delighted to announce that the International Day of Light in 2021 was once again a tremendous worldwide success, and the purpose of this brief newsletter is to provide you with a summary of the key information, and links to more detailed reports. 

Although there are continual challenges being faced by all sectors of society, the enthusiasm of the International Day of Light Community during 2021 resulted in over 360 registered events in 64 countries covering a very wide range of themes from basic science, photonics, lighting, healthcare, energy, industry, art, culture, education and more.  The social media impact of the International Day of Light was wide and impressive, with messages on various platforms from multiple UN agencies - UNESCO of course, UNESCO national commissions, the UN, UNDP, UN Women, UNESCO Courier, and engagements from many others, including organizations such as the IAU, the Sustainable Energy for All Initiative, LIGO, The Nobel Prize, ELI, the US Department of Energy, Los Alamos National Laboratory, Fermilab, the Royal Opera House, and many other national and international scientific societies and bodies. 

The Trust Science campaign launch was an important highlight, and attracted support  from over 4500 signatories including Nobel and Breakthrough Prize laureates, other UNESCO and major award winners, science advocates and communicators, and members of the scientific community worldwide.  We would like to thank especially the IEEE Photonics Society, Optica (formerly OSA), and SPIE for having led this initiative which has been extremely important on multiple levels.  The campaign resonated very strongly internationally, and was included specifically in the Official IDL 2021 Message from UNESCO's Director General.  

You can download detailed infographics and reports on the International Day of Light 2021 and the Trust Science campaign at the IDL website reports page. This page also includes links to download the Official Messages from the Director General of UNESCO.  

We could not achieve such success without your help, and as always, please accept our most sincere thanks for your continued support!  We are now looking forward to 2022, and you will soon receive a message with an update of our plans for next year.  The International Day of Light in 2022 will mark our 5th annual celebration, and will be an occasion to continue building capacity and raising awareness of the importance of science in society.   
John Dudley and Joe Niemela
International Day of Light 2021
Steering Committee Chairs

Sign the Trust Science Pledge

The Trust Science campaign at is running and online until November 2021, and so it is still possible to sign the pledge and learn more. 

After you’ve signed, we hope that you will share the message to trust science with your friends, family and colleagues as well as on social media via Twitter, Facebook and Instagram, using #TrustScience and #LightDay2021.

To date, the pledge has seen enthusiastic support worldwide with founding signatories including Nobel laureates, UNESCO L’Oréal For Women in Science prize winners, Presidents and CEOs of major scientific bodies, as well as scientists and students from over 90 countries. 

Translations of the Trust Science pledge text have also been developed for all UN Languages.

Please contact us if you have any questions.

The many events which have taken place for the International Day of Light in 2021 provide a remarkable snapshot of the diversity of the theme of light which cuts across boundaries in science, art, and culture. We strongly encourage everyone to check out the IDL global event calendar. This will remain online until November when we begin preparing the 2022 campaign.  

For event organizers who wish to issue participation certificates to your activity's attendees, you can download the official IDL event participation certificate template here.

Copyright © 2021 International Day of Light Secretariat, All rights reserved.

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