World Blood Donor Day (June 14, Gregorian) was first observed as an international event on June 14, 2005. The day was established to raise public awareness about the importance of blood donation and to encourage voluntary and unpaid participation in blood drives. In 2005, the World Health Organization and several other international organizations decided to designate this date as a global observance in the Gregorian calendar to highlight the ongoing need for safe and sufficient blood supplies in medical centers. For this reason, it was officially added to the Gregorian calendar in 2005 as a recognized observance. On this day, many countries organize awareness campaigns, blood donation drives, and educational events to emphasize the value of voluntary blood donation. The day provides an opportunity to recognize blood donors and motivate more people to participate in this humanitarian act. Since 2005, World Blood Donor Day has been marked annually and has become one of the most significant dates in public health. The observance plays a vital role in increasing safe blood reserves and improving the safety of blood transfusion processes worldwide.
