How is International Day of Light calculated?

This event is observed every year on 16 May.

When is International Day of Light 2566?

Name: International Day of Light
Start: 2566-05-16
End: 2566-05-16
Location: Worldwide

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

Download an iCalendar file for International Day of Light and add it to your calendar app.

When is International Day of Light 2566?: International Day of Light 2566 is on Friday, 16 May 2566.
What day of the week is International Day of Light 2566?: It falls on Friday.
How is International Day of Light calculated?: This event is observed every year on 16 May.