World Hemophilia Day on 17th April. World Hemophilia Day is an international observance held annually on April 17 by the World Federation of Hemophilia (WFH). It is an awareness day for hemophilia and other bleeding disorders, which also serves to raise funds and attract volunteers for the WFH. It was started in 1989; April 17 was chosen in honor of Frank Schnabel's birthday. The World