International Day of Light 2018

International Day of Light celebrates light science and its applications in culture, education and sustainable development.

Frequently asked questions

When is International Day of Light 2018?

International Day of Light 2018 is on Wednesday, 16 May 2018.

What day of the week is International Day of Light 2018?

It falls on Wednesday.

How is International Day of Light calculated?

This event is observed every year on 16 May.