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.
Read More
Read More
Similar Observances
World Alzheimer's Month
World Alzheimer's Month is a global opportunity to raise awareness around, educate, encourage support of and demystify dementia.
Read More
Read More
World PCOS Day
Learn about World PCOS Day, an initiative by PCOS Challenge to raise awareness and support for those affected by Polycystic Ovary Syndrome. Discover how you can get involved.
Read More
Read More
World Physical Therapy Day
World Physical Therapy Day is a day to celebrate the life-changing work of physical therapists!
Read More
Read More
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!
Read More
Read More
