The ozone layer is celebrated each year on 16 September , observed worldwide as the International Day for the Preservation of the Ozone Layer (also called World Ozone Day).

Quick Scoop: Key Facts

  • Date: 16 September every year.
  • Official UN name: International Day for the Preservation of the Ozone Layer.
  • Origin: Chosen to mark the signing of the Montreal Protocol on substances that deplete the ozone layer in 1987.
  • Purpose: To raise awareness about protecting the ozone layer, which shields life on Earth from harmful ultraviolet radiation.

Why 16 September?

  • The Montreal Protocol, a landmark environmental agreement to phase out ozone‑depleting substances, was signed on 16 September 1987.
  • In 1994, the UN General Assembly proclaimed 16 September as this international observance to commemorate that treaty and highlight ongoing ozone protection efforts.

Recent Themes (Example)

  • 2023: “Montreal Protocol: fixing the ozone layer and reducing climate change.”
  • 2024: “Montreal Protocol: Advancing Climate Action.”
  • 2025: “From science to global action.”

Simple SEO-style meta description

International Day for the Preservation of the Ozone Layer, also known as World Ozone Day, is celebrated on 16 September every year to commemorate the 1987 Montreal Protocol and promote global action to protect the ozone layer.

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