"Holocaust Martyrs' and Heroes' Remembrance Day (Yom Hashoah in Hebrew) is a national day of commemoration in Israel, on which the six million Jews murdered in the Holocaust are memorialized. It is a solemn day, beginning at sunset on the 27th of the month of Nisan and ending the following evening, according to the traditional Jewish custom of marking a day. Places of entertainment are closed and memorial ceremonies are held throughout the country. The central ceremonies, in the evening and the following morning, are held at Yad Vashem and are broadcast on the television. Marking the start of the day-in the presence of the President of the State of Israel and the Prime Minister dignitaries, survivors, children of survivors and their families, gather together with the general public to take part in the memorial ceremony at Yad Vashem in which six torches, representing the six million murdered Jews, are lit. The following morning, the ceremony at Yad Vashem begins with the sounding of a siren for two minutes throughout the entire country. For the duration of the sounding, work is halted, people walking in the streets stop, cars pull off to the side of the road and everybody stands at silent attention in reverence to the victims of the Holocaust. Afterward, the focus of the ceremony at Yad Vashem is the laying of wreaths at the foot of the six torches, by dignitaries and the representatives of survivor groups and institutions. Other sites of remembrance in Israel, such as the Ghetto Fighters' Kibbutz and Kibbutz Yad Mordechai, also host memorial ceremonies, as do schools, military bases, municipalities and places of work. Throughout the day, both the television and radio broadcast programs about the Holocaust. In recent years, other countries and Jewish communities have adopted Yom Hashoah, the 27th of Nisan, to mark their own day of memorial for the victims of the Holocaust".
"In the U.S., Holocaust Remembrance Day is a day that has been set aside for remembering the victims of the Holocaust and for reminding Americans of what can happen to civilized people when bigotry, hatred and indifference reign. The United States Holocaust Memorial Council, created by act of Congress in 1980, was mandated to lead the nation in civic commemorations and to encourage appropriate Remembrance observances throughout the country. Observances and Remembrance activities can occur during the week of Remembrance that runs from the Sunday before through the Sunday after the actual date".
"While there are obvious religious aspects to such a day, it is not a religious observance as such. The internationally-recognized date comes from the Hebrew calendar and corresponds to the 27th day of Nisan on that calendar. That is the date on which Israel commemorates the victims of the Holocaust. In Hebrew, Holocaust Remembrance Day is called Yom Hashoah. When the actual date of Yom Hashoah falls on a Friday (as will happen in 2008) the state of Israel, following the Knesset legislation establishing the event, observes Yom Hashoah on the preceding Thursday. When it falls on a Sunday (2007, 2010, 2011, 2013, 2014), Yom Hashoah is observed on the following Monday".
"The Holocaust is not merely a story of destruction and loss; it is a story of an apathetic world and a few rare individuals of extraordinary courage. It is a remarkable story of the human spirit and the life that flourished before the Holocaust, struggled during its darkest hours, and ultimately prevailed as survivors rebuilt their lives".
http://www1.yadvashem.org/remembrance/rememberance_day/remembrance_day_2007/Remembrance_day_2007_Overview.html
http://www.knesset.gov.il/shoah/eng/eshoah.htm
(Additional links to follow.)