World Hemophilia Day When 04/17/2026 All Day Add To Calendar Download ICS Google Calendar iCalendar Office 365 Outlook Live Event Type Advocacy Supported by the World Federation of Hemophilia (WFH), Hemophilia Awareness Day was first established in 1989. The theme of the event this year is “Diagnosis: First step to care.” Click here for more information and events for World Hemophilia Day.