The International Day of Commemoration in Memory of Victims of the Holocaust has been celebrated annually on January 27^th since 2006. This observance was initiated by a United Nations General Assembly proclamation in November 2005 to honor the anniversary of the liberation of the concentration camp Auschwitz-Birkenau on January 27^th, 1945, by Soviet troops. The United Nations Outreach Programme on the Holocaust hosts events for Holocaust Remembrance Week – check them out here.