International Wave Of Light 2024 Theme. The international day of light is celebrated on 16 may each year, the anniversary of the first successful operation of the laser in 1960 by physicist and engineer, theodore. Through the efforts of unesco, the international day of light (idl) inspires events and activities taking place on 16 may around the world, each raising awareness.

In 2024, this poignant day falls on a sunday, providing a meaningful. Global wave of light, 15 october.