International Zero Emissions Day

About International Zero Emissions Day

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Dates of International Zero Emissions Day
2027 InternationalSep 21 International Tue, Sep 21Observances Holiday 2026 InternationalSep 21 International Mon, Sep 21Observances Holiday 2025 InternationalSep 21 International Sun, Sep 21Observances Holiday 2024 InternationalSep 21 International Sat, Sep 21Observances Holiday 2023 InternationalSep 21 International Thu, Sep 21Observances Holiday
Summary
Discover International Zero Emissions Day (ZeDay) on September 21. Learn how you can give the planet a break from fossil fuels and adopt sustainable habits.

What is International Zero Emissions Day?

Observed annually on September 21, International Zero Emissions Day—often referred to as ZeDay—calls on individuals, businesses, and governments to take a voluntary, 24-hour break from burning fossil fuels.

Founded with the simple yet powerful slogan, “Giving our planet one day off a year,” the observance aims to give the Earth a brief respite from greenhouse gases and atmospheric pollution.

While a single day cannot solve the climate crisis on its own, ZeDay serves as an annual checkpoint to reflect on our energy habits, test-drive low-carbon alternatives, and commit to long-term sustainability.

• Did you know? Zero Emissions Day was created in 2008 by Canadian artist and environmental activist Ken Wallace in Nova Scotia, growing from a local idea into a global movement spanning over 100 countries!

History of International Zero Emissions Day

The concept of ZeDay was born out of a desire to visualize a cleaner future. In 2008, Ken Wallace launched the initiative online, encouraging people worldwide to stop or drastically minimize their consumption of fossil-fuel-generated energy for one full day.

The date of September 21 was chosen in part because it coincides with the equinox in many parts of the world, symbolizing a natural balance between humanity and nature.

Over the years, the movement has gained support from educational institutions, environmental groups, and global citizens interested in raising awareness about air quality and climate change.

How to Observe International Zero Emissions Day

Participating in Zero Emissions Day is entirely voluntary and focuses on practical, everyday choices rather than impossible standards. Here are some of the ways you can get involved and lower your footprint for the day:

• Leave the car at home: Opt for walking, cycling, or utilizing public transport for your journeys.

• Cut down on electricity: Unplug non-essential electronics and appliances, and avoid high-energy household chores like tumble drying.

• Eat plant-based: Consider having meat-free meals for the day, since food production contributes significantly to global greenhouse gas emissions.

• Review your energy use: Take time to assess your home or workplace energy consumption and set a concrete reduction target for the upcoming year.

• Spread the word: Share tips on social media or talk with friends and family about the importance of transitioning to renewable energy sources.

All events on September 21st 2026