Official

International Day of Light 2026

International Day of Light falls on May 16, 2026.

16 May 2026

Date May 16, 2026 Saturday 30 days ago Source: UNESCO

About this observance

An official international observance listed by UNESCO and marked on May 16.

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When is International Day of Light in 2026?

International Day of Light is listed for May 16, 2026 in 2026.

What is the source for International Day of Light?

The current source label for this entry is UNESCO.