World Blood Donor Day
June 14, 2026 Recurs yearly
Find specific campaign dates, ribbons, national and international observances.
June 14, 2026 Recurs yearly
Officially represented by the Red Ribbon.
Observed annually on 14 June – the birthday of Karl Landsteiner, discoverer of the ABO blood group system; this WHO-led day honors voluntary, unpaid blood donors whose contributions support patients in emergencies, childbirth, surgeries, and cancer treatment.
“One Drop of Humanity. Give Blood. Save Lives.” places the human meaning of blood donation at the center of the campaign. WHO presents each donation as more than a medical procedure: it is an expression of compassion, solidarity and collective responsibility that can become a lifeline for someone else.
The campaign also emphasizes that blood availability cannot depend on occasional appeals alone. Regular, voluntary, unpaid donors are the foundation of reliable blood supplies, while governments and health systems must invest in safe and sustainable national blood programs.
Find specific campaign dates, ribbons, national and international observances.
Join our community for practical, jargon-free health education and medical insights delivered weekly.
Health Custodian uses essential cookies to ensure secure, reliable operation. With your explicit consent, we also use privacy-friendly analytics to understand how readers use our educational guides. We do not sell or share your medical browsing data for targeted advertising.
Your browser transmitted a universal opt-out signal. In compliance with California CPRA, Colorado CPA, and other US laws, non-essential analytics and personal data sharing have been automatically disabled.
Health Custodian operates under strict global privacy principles (including EU/UK GDPR, California CCPA/CPRA, and Virginia/Colorado/Connecticut state frameworks). Choose which categories of cookies and data processing you permit below:
Essential for core functions like theme contrast preferences (light/dark mode), security authentication, language selection, and consent recording. These cannot be switched off.
Allows us to measure anonymous, aggregated article readership so we can identify which health topics need clearer explanations. We never track individual identity or correlate reading history with personal files.
Under the California Consumer Privacy Act (CCPA/CPRA) and state privacy laws, you have the statutory right to opt out of the "sale" or "sharing" of personal data for cross-context behavioral advertising. Health Custodian never sells medical dossiers or shares patient queries.