World Blood Donor Day takes place on June 14, 2021. The day is dedicated to "thanking and celebrating voluntary non-remunerated blood donors". It occurs on June 14, the birthday of Karl Landsteiner, the creator of the ABO blood group system, for which he won the Nobel Prize.
We have placed a detailed description of this event on this page: World Blood Donor Day 2020. For further information please stop by there!