International day of mourning

Day marked by mourning and memorial activities

An international day of mourning is a day, or one of several days, marked by mourning and memorial activities observed among countries under an intergovernmental organization. They are designated by the intergovernmental organization. Such days include those marking the death or funeral of a renowned individual or individuals from a country of that organization or elsewhere or the anniversary of such a death or deaths, the anniversaries of a significant natural or man-made disaster occurring in the country of the organization, wartime commemorations or in memory of the victims of a terrorist attack. Common symbols include flying the organization's flag at half-mast and observing minutes of silence.

This keyword could refer to multiple things. Here are some suggestions: