About National Blood Donor Day
This date was established by Decree No. 53.988/1.964 in June 1964. November 25th was chosen as the anniversary of the formation of the Brazilian Association of Voluntary Blood Donors.
The amount of blood taken does not affect your health as recovery is immediate after donation. An adult person has an average of five litres of blood and a maximum of only 450ml of blood is collected in a donation.
Related Observances
World Blood Donor Day
World Blood Donor Day is observed to raise awareness for the need of blood, blood products, and the need for safe blood.
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World Pneumonia Day
A day to promote interventions to protect against, prevent and treat pneumonia; and generate action to combat pneumonia.
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Food Service Safety Month
You can't judge a book by its cover, but it's important that you can judge food by its label.
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Other Observances on November 25th 2025
National Parfait Day
Celebrate National Parfait Day by indulging in exquisite layers of flavors and textures. whether fruity or creamy, parfaits offer a perfect treat for everyone!
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