World Ozone Day - 16 September

Why in News ?

• World Ozone Day is celebrated every year on 16 September. Its purpose is to spread awareness among people about the depletion of the ozone layer.
• Theme of World Ozone Day 2025- "Global Action from Science"

History:

• This day is celebrated in memory of the Montreal Protocol.
• The Montreal Protocol was signed on 16 September 1987.
• The Montreal Protocol is a landmark multilateral environmental agreement.
• It regulates the production and consumption of man-made chemicals referred to as ozone-depleting substances (ODS).
• The first World Ozone Day was celebrated in the year 1994.

Ozone

• It is a gas composed of three atoms of oxygen.
• Ozone is a pale blue gas with a characteristic odor at room temperature.
• It is found in two main regions of the Earth's atmosphere - the stratosphere and the troposphere.
• It is slightly soluble in water.
• The ozone layer about 6 to 30 miles above the Earth's surface reduces the amount of harmful ultraviolet (UV) radiation reaching the Earth's surface.