The Day of Remembrance for all Victims of Chemical Warfare is an annual event held on April 29 as a “tribute to the victims of chemical warfare, as well as to reaffirm the commitment of the Organization for the Prohibition of Chemical Weapons (OPCW) to the elimination of the threat of chemical weapons, thereby promoting the goals of peace, security, and multilateralism.” It is officially recognised by the United Nations (UN) and has been celebrated since 2005.