Question: National Survivors of Suicide Day was designated by which organization, as a day when the friends and family of those who have died by suicide can join together for healing and support, it's day always falls on the Saturday before Thanksgiving, a national holiday celebrated in Canada, the United States, some of the Caribbean islands, and Liberia?
Sentence (from "Thanksgiving"): Thanksgiving is celebrated on the second Monday of October in Canada and on the fourth Thursday of November in the United States, and around the same part of the year in other places.
Relevant evidence: No