An environmental advocacy day on March 18 celebrating biodiesel as a sustainable, cleaner-burning domestic biofuel made from vegetable oils, animal fats, and recycled cooking oil.
Last updated February 26, 2026 · by the
Holiday Calendar Team
The National Biodiesel Board (NBB), now Clean Fuels Alliance America, established National Biodiesel Day in 2005. It is celebrated on March 18, the birthday of Rudolf Diesel, who originally designed his engine to run on vegetable oils.
On March 18, it's time to celebrate National Biodiesel Day! This day has been around since 2007 and was created to recognize the importance of biodiesel as an alternative fuel source. Biodiesel is made from renewable resources such as vegetable oils, animal fats, and recycled cooking oil and can be used in place of regular diesel fuel in many engines. Not only does it reduce emissions by up to 80%, but it also helps boost local economies and creates jobs. So join us in celebrating this important day by learning more about how biodiesel can help save the planet!
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WHY THIS DAY MATTERS
By buying biodiesel produced in your area, you're supporting the local economy and helping create jobs for people who are producing it. Buying biodiesel not only helps reduce dependence on foreign oil but also promotes an alternative fuel source that contributes positively to our environment!
Biodiesel is made from renewable resources like vegetable oil, cooking grease or animal fat. This makes it a more sustainable option than traditional petroleum diesel fuels, as it produces fewer emissions. What's more, biodiesel doesn't have to be imported from outside sources - it can be produced locally using sustainable materials!
Biodiesel produces fewer emissions than most petroleumbased fuels, making it an excellent choice for reducing air pollution. It also has superior lubrication properties, which helps reduce engine wear and tear over time. Plus, it's biodegradable, so spills won't harm the environment!
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