International Day for the Preservation of the Ozone Layer
Marking the Montreal Protocol — the environmental treaty that actually worked.
1 min read · Fact-checked · Updated for 2026
About International Day for the Preservation of the Ozone Layer
World Ozone Day on September 16th commemorates the 1987 signing of the Montreal Protocol, which phased out ozone-depleting substances. It remains the most successful environmental treaty in history: the ozone layer is on track to fully recover by mid-century — proof that coordinated global action works.
Read more on WikipediaWhen is International Day for the Preservation of the Ozone Layer?
International Day for the Preservation of the Ozone Layer is celebrated every year on September 16. Upcoming dates:
| Year | Date | Day of week | |
|---|---|---|---|
| International Day for the Preservation of the Ozone Layer 2026 | September 16, 2026 | Wednesday | View date → |
| International Day for the Preservation of the Ozone Layer 2027 | September 16, 2027 | Thursday | View date → |
| International Day for the Preservation of the Ozone Layer 2028 | September 16, 2028 | Saturday🎉 weekend | View date → |
| International Day for the Preservation of the Ozone Layer 2029 | September 16, 2029 | Sunday🎉 weekend | View date → |
| International Day for the Preservation of the Ozone Layer 2030 | September 16, 2030 | Monday | View date → |
How to Celebrate International Day for the Preservation of the Ozone Layer
- 🎯Learn one new fact about the cause behind International Day for the Preservation of the Ozone Layer and share it.
- 💡Donate to or volunteer with an organization working on this issue year-round.
- 📣Post with #InternationalDayforthePreservationoftheOzoneLayer to help the message travel further.
Official hashtag: #InternationalDayforthePreservationoftheOzoneLayer
Frequently Asked Questions
When is International Day for the Preservation of the Ozone Layer 2026?
International Day for the Preservation of the Ozone Layer 2026 is on Wednesday, September 16, 2026.
How many days until International Day for the Preservation of the Ozone Layer?
There are 65 days until International Day for the Preservation of the Ozone Layer (September 16, 2026).
What category is International Day for the Preservation of the Ozone Layer?
International Day for the Preservation of the Ozone Layer is categorized as a Awareness event.
Is International Day for the Preservation of the Ozone Layer a public holiday?
International Day for the Preservation of the Ozone Layer is an observance day, not typically a public holiday. Check your country's official calendar for local public holidays.
More Awareness Days
World Braille Day
January 4
Marking the birthday of Louis Braille, this day raises awareness of the importance of Braille as a communication tool for blind and visually impaired people.
World Introvert Day
January 2
A day to appreciate introverts and their need for quiet recharge after the busy holiday season.
National Hugging Day
January 21
A day encouraging people to hug family and friends — founded in 1986 to help people show emotions in public.
World Radio Day
February 13
UNESCO's celebration of radio as a powerful medium for information, entertainment and emergency communication.