International Day for the Preservation of the Ozone Layer – Sep. 16, 2026

International Day for the Preservation of the Ozone Layer
Submit your updates or photos
Categories:
Tags:
AwarenessConservationEnvironment
Where:
United States
Date change rule:
Every September 16
Holiday emoji:
🌎

International Day for the Preservation of the Ozone Layer calls for global action every September 16. This day reminds us of the critical importance of the ozone layer in shielding life on Earth from harmful ultraviolet radiation. Join worldwide efforts to protect our planet’s atmosphere and support sustainable practices.

Want to sponsor International Day for the Preservation of the Ozone Layer? Learn how

Expected International Day for the Preservation of the Ozone Layer Deals

As a global awareness day for environmental protection, International Day for the Preservation of the Ozone Layer focuses on advocacy and education rather than commercial deals. Organizations like the United Nations Environment Programme (UNEP), NASA, and the Environmental Protection Agency (EPA) will share educational resources and calls to action. Brands committed to sustainability, such as Patagonia and The North Face, may highlight their eco-friendly initiatives and products that avoid ozone-depleting substances. Look for local environmental groups and non-profits like the Environmental Defense Fund to host webinars, cleanup events, or fundraising drives to support ongoing research and policy advocacy. We will update this page with confirmed live events and campaigns as September 16 approaches.

Platform Guide for International Day for the Preservation of the Ozone Layer

LinkedIn

Tag National Today (linkedin.com/company/nationaltoday) and use #OzoneLayerDay. Share insights on corporate sustainability efforts or green technologies.

X/Twitter

Mention @NatlToday and use #OzoneLayerDay. Post facts about ozone depletion and recovery, or highlight policy successes like the Montreal Protocol.

Facebook

Mention National Today (facebook.com/nationaltoday) and use #OzoneLayerDay. Share stories of community action or educational videos about protecting the environment.

Social Media Tips for International Day for the Preservation of the Ozone Layer

Individuals

Educate yourself and others about the importance of the ozone layer by sharing verified information from scientific organizations. Support brands that prioritize ozone-friendly products and practices.

Creators

Produce short, engaging videos or infographics explaining the science behind ozone depletion and the success of global environmental treaties. Challenge your audience to adopt eco-conscious habits.

Brands

Showcase your commitment to sustainability by detailing how your products or operations minimize environmental impact. Highlight any initiatives that support ozone layer protection or climate action.

Organizations & Brands for International Day for the Preservation of the Ozone Layer

  1. United Nations Environment Programme (UNEP)

    Established in 1972, UNEP is the leading global environmental authority that sets the global environmental agenda. It was instrumental in the creation and implementation of the Montreal Protocol, coordinating international efforts to protect the ozone layer.

  2. NASA

    The U.S. National Aeronautics and Space Administration conducts extensive research and monitoring of Earth's atmosphere, including the ozone layer. Their satellite data provides critical insights into ozone depletion and recovery trends.

  3. DuPont

    Founded in 1802, DuPont is a global chemical company that historically produced CFCs. After scientific evidence emerged, DuPont played a role in developing and transitioning to ozone-friendly alternatives for refrigerants and aerosols.

  4. The Climate Reality Project

    Founded by Al Gore in 2006, this organization works to catalyze a global solution to the climate crisis. They educate the public on environmental issues, including the interconnectedness of ozone depletion and climate change.

  5. Patagonia

    Founded by Yvon Chouinard in 1973, Patagonia is an outdoor apparel company known for its environmental activism and sustainable business practices. They advocate for policies that protect natural resources and reduce carbon footprints.

  6. Environmental Defense Fund (EDF)

    Established in 1967, EDF is a leading environmental advocacy group that links science, economics, and law to create innovative solutions to environmental problems. They have been active in promoting policies to protect the ozone layer and address climate change.

  7. Honeywell

    A diversified technology and manufacturing company, Honeywell has been a key developer of next-generation refrigerants. Their Solstice line of hydrofluoro-olefin (HFO) refrigerants offers significantly lower global warming potential than older alternatives.

International Day for the Preservation of the Ozone Layer Hero

Sherwood Rowland

F. Sherwood Rowland (1927–2012) was an American atmospheric chemist who, along with Mario Molina, discovered that chlorofluorocarbons (CFCs) were depleting the ozone layer. Their groundbreaking research, published in 1974, earned them the Nobel Prize in Chemistry in 1995. Rowland's work was crucial in prompting the global ban on CFCs through the Montreal Protocol, demonstrating the profound impact of scientific discovery on environmental policy.

History of International Day for the Preservation of the Ozone Layer

The ozone layer is a protective layer of gas that shields the Earth from harmful ultraviolet rays from the Sun. While the Sun is essential for life, it also emits radiation that is too much for living beings to survive. This is where this layer of high concentration of ozone comes in and makes life as we know it possible for us.

In the late 1970s, however, scientists realized that human activity was destroying the ozone layer. They discovered a hole that was caused by ozone-depleting gases, often found in air conditioners, refrigerators, etc. This depletion of the ozone layer, in turn, was affecting life on Earth — the destruction of plants and ecosystems, increase in skin cancer, etc. The scientists’ discovery highlighted the importance of the ozone layer and the dire need to preserve it.

The international community rose to the occasion. In 1985, 28 countries adopted and signed the Vienna Convention for the Protection of the Ozone Layer, a formal declaration to come together and protect the ozone layer. In September 1987, the Montreal Protocol on Substances that Deplete the Ozone Layer was drafted. This prompted countries to unite their efforts and eliminate 99% of all ozone-depleting substances. Owing to this successful effort, the ozone layer is healing.

To commemorate the signing of the Montreal Protocol, the United Nations General Assembly declared September 16 as the International Day for the Preservation of the Ozone Layer in 1994. Also known as World Ozone Day, September 16 has since then been dedicated each year to the appreciation and preservation of this protective layer and the success of the Vienna Convention.

International Day for the Preservation of the Ozone Layer timeline

1913
Ozone Layer is Discovered

French physicists Charles Fabry and Henri Buisson discover the ozone layer while measuring radiation from the Sun’s surface to the ground of Earth.

1976
Ozone Layer is in Danger

During atmospheric research, scientists find that the ozone layer is depleting due to human activity.

1985 - 1987
Ozone for Life

Global efforts are made for the preservation of the ozone layer and the Vienna Convention and Montreal Protocol on Substances that Deplete the Ozone Layer are born.

1994
World Ozone Day

The UN General Assembly designates September 16 to be the International Day for the Preservation of the Ozone Layer.

How Businesses Can Celebrate International Day for the Preservation of the Ozone Layer

Local businesses can observe International Day for the Preservation of the Ozone Layer by reviewing and updating their environmental policies. Restaurants and supermarkets can ensure their refrigeration systems use ozone-friendly refrigerants and properly dispose of older equipment. Retailers can highlight products that are free of ozone-depleting substances and educate customers on sustainable choices. Consider partnering with local environmental groups for a cleanup event or a donation drive, demonstrating a commitment to global environmental health.

International Day for the Preservation of the Ozone Layer FAQs

When is International Day for the Preservation of the Ozone Layer?

International Day for the Preservation of the Ozone Layer in 2026 falls on Wednesday, September 16. It’s a day for global reflection and action on environmental protection.

What is the ozone layer and why is it important?

The ozone layer is a region of Earth’s stratosphere that absorbs most of the Sun’s harmful ultraviolet (UV) radiation. Without this protective shield, UV radiation would reach Earth’s surface, causing increased rates of skin cancer, cataracts, and harm to ecosystems.

How many countries observe International Day for the Preservation of the Ozone Layer?

This day is observed by all 198 parties to the Montreal Protocol, making it the first treaty in United Nations history to achieve universal ratification. This widespread participation underscores the global commitment to protecting the ozone layer.

What is the Montreal Protocol?

The Montreal Protocol on Substances that Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances responsible for ozone depletion. It was signed on September 16, 1987.

How to Celebrate International Day for the Preservation of the Ozone Layer

  1. Eliminate ODSs

    Get electronic appliances serviced routinely and discard any old appliances that could be emitting ozone-depleting gases.

  2. Upgrade your transportation

    Heavy use of vehicles contributes to the depletion of the ozone layer. Plan your commutes and swap unnecessary vehicle use with walks, bicycles, and carpools.

  3. Keep preserving

    The Earth is our home and we must all do our part each day to protect it. Make small changes in daily life and reduce your emission of ODSs.

5 Interesting Facts To Know About The Ozone Layer

  1. It works hard

    The ozone layer absorbs up to 98% of all harmful ultraviolet rays from the Sun.

  2. It is Earth’s thermostat

    It regulates the temperature and keeps our planet from overheating or freezing.

  3. Not all ozone is good

    The ozone found in the troposphere is harmful to human beings and urbanization is one of the leading causes for the increase of bad ozone.

  4. It protects us from health issues

    Nearly two million cases of skin cancer are prevented every year thanks to the Montreal Protocol.

  5. It has a bright future

    If all goes according to plan, the earth could restore the ozone layer to its 1980s level by 2050.

Why We Love International Day for the Preservation of the Ozone Layer

  1. A day of celebration

    It is a celebration of the work done under the Vienna Convention and the instantaneous action taken by the world’s governments for the environment.

  2. Hard work pays off

    The success of the Montreal Protocol is proof that if humanity plays its part in protecting the environment, the environment in turn heals and protects humanity.

  3. Reminder to give back to nature

    In the daily hustle and bustle of life, we sometimes forget that we are part of something bigger. This day gives us a nudge to slow down, look around, and care for and appreciate the planet that we call home.

International Day for the Preservation of the Ozone Layer dates

Year Date Day
2026 September 16 Wednesday
2027 September 16 Thursday
2028 September 16 Saturday
2029 September 16 Sunday
2030 September 16 Monday