
Saturday October 10, the 18th edition of "Day of the Night" is organizing several hundred events in France to raise awareness of light pollution and the protection of nocturnal biodiversity, with the extinction of public lighting in municipalities such as Grenoble and Royan, night walks, observations of the starry sky and conferences on bats, while light pollution increased by 16% in the world between 2014 and 2022 according to a study by Nature published on April 8, 2026.
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Light pollution prevents you from enjoying the starry sky and has concrete repercussions on biodiversity, being a major cause of the disappearance of insects according to the Agir pour l'environnement association.
Turn off the light and look up to the sky. Several hundred events are being organized on Saturday, October 10, on the occasion of the 18th edition of "Day of the Night", in order to raise awareness of light pollution and the protection of nocturnal biodiversity. Almost everywhere in France, municipalities will turn off their public lighting for part of the night, such as in Grenoble (IsĂšre) or Royan (Charente-Maritime). Night walks, observations of the starry sky or conferences on bats are also planned in many municipalities, listed in this map.
Light pollution not only prevents you from enjoying the starry sky, it also has very concrete repercussions on biodiversity. It is even a major cause of the disappearance of insects, recalls the Agir pour l'environnement association, which coordinates this operation. The challenge is immense. Light pollution increased by 16% worldwide between 2014 and 2022, according to a study published on April 8, 2026 in the scientific journal Nature.

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