World Suicide Prevention Day (WSPD) is an awareness day observed on 10 September every year, in order to provide worldwide commitment and action to prevent suicides, with various activities around the world. The International Association for Suicide Prevention (IASP), collaborates with the World Health Organization (WHO) and the World Federation for Mental Health, to host World Suicide Prevention Day. In 2011 an estimated 40 countries held awareness events to mark the occasion. The United Nations issued 'National Policy for Suicide Prevention' in the 1990s which some countries use as a basis for their suicide policies.
The 2014 theme is "Light a candle near a window". To help spread awareness, you are asked to light a candle near a window at 8pm the evening of September 10th.
Below is a link with information to recognize someone who could be suicidal and prevent it as well.
Ways to prevent suicide
http://www.helpguide.org/mental/suicide_prevention.htm