📣 🗞 We have a theme for upcoming #lightday2026🗞📣 🔆 💡 Light For A Sustainable Future 💡 🔆 🗞 For more details and updates, check out our latest newsletter: https://t.co/t4pyexNfRE @UNESCO #lightday2026

🔔 Start planning events and activities for 2026 raising awareness associated with the 2026 theme. Event registrations are open!

🟩 The theme links to the priorities of @UNESCO and the @UN Sustainable Development Goals (SDGs), and supports the International Decade of Sciences for Sustainable Development

🟩 The theme also encourages the next generation into education in science, engineering and technology

🟩 The theme highlights how light-based technologies drive sustainability in areas such as low energy lighting, green manufacturing, and improved agriculture.

📢EPS-QEOD Prize for Research into the Science of Light 2026: The call for nominations is open! 📅Deadline 27 October 2025 👉 https://t.co/5s5BdJQ2aX #Nanometa #nanotechnology #photonics

🌟 Our committed volunteers, organisers, and sponsors are at the heart of this success! Huge THANKS to all who organised events for inspiring many about the science of light and its impact on society and to those who participated in the global celebration. Until #lightday2026!

✅ 450+ inspiring events were held ✅ Across 59+ countries and worldwide ✅ 125,000+ participants engaged, at both targeted local and national levels ✅ Covering themes from science and photonics to art, education, health, energy, culture, and more!

🧵🚨🗞 Our #July Newsletter is here🚨🗞 We are thrilled to share the (ongoing) global impact of the 8th edition of @UNESCO #lightday2025!🌍✨ 🗞 Dive into our July newsletter for event highlights, and inspiration: https://t.co/cmjm2tPn2u

For those who missed, we are happy to continue accepting event registrations for the year. So grab your chance and secure a spot in our global events map! https://t.co/zEvckAmvNO

🎓 Participation Certificate To recognise your valuable contribution we have created a Certificate of Participation you can personalise with your name, your event name, or your participants’ names. Feel free to share /distribute as a token of appreciation! https://t.co/HzSZkRjZr6

🧵🌟 A Big Thank YOU to our incredible community! We are truly grateful to all the passionate event organisers and participants for your tremendous effort in making the 8th edition of @UNESCO #lightday2025 a grand success!

#ThaiTelecom150 - June TALK "History and Updated #CYBERCRIME" by Thai #CyberPolice #SesquicentennialOfThaiTelecommunications #๑๕๐ปีโทรคมนาคมไทย #Telecommunications #LightDay2025 #IDL2025 @IDLofficial (detail) https://t.co/A8K2da0Sqf (more info.) https://t.co/MJQOwPJq79

🤩Quantum events in the world | Week from June 02 to 08 Do not miss the amazing events framed in the celebration of the International Year of Quantum Science and Technology (IYQ). ℹ️More information and more events here: https://t.co/wAyn550F3f #quantum2025 #IYQ2025

@IDLofficial 65th anniversary of the laser’s invention

On 16 May 1960, the laser was invented by Theodore Maiman, check out the story by @aubeva that we published on the #IYL2015 blog https://t.co/vIZjQKiVrE #IDL2018 #laser #photonics

Međunarodni dan svetlosti '25 u spoju poezije i nauke uspešno i inspirativno obeležen u Valjevu 16. maja u saradnji sa Valjevskom gimnazijom, Matičnom bibliotekom Ljubomir Nenadović, Narodnim muzejom i neformalna grupa ZVRK (Zeleni vitezovi reke Kolubare) #MDS2025 #DanSvetlosti

Quantum events in the world | Week from May 26 to 31 Do not miss the events framed in the celebration of the International Year of Quantum Science and Technology (IYQ). Events here:

🪐 IDL Photo Contest – A Bright Finale As the curtain closes on our IDL Photo Contest, we want to take a moment to reflect and say thank you. 👏🏻 A huge thanks to everyone who participated, and once again, congratulations to our winners —👇🏻

🚨 You can STILL register your events for #lightday2025 even if they are held later this year or you missed! 💡🎉 📥 https://t.co/zEvckAmvNO And don’t forget to tag us – we love to share your efforts! 🤩