1. The European Day of Parks was launched by the EUROPARC Federation with the aim of raising the profile of Europe's protected areas and generating public support for their aims and work. It was first held in 1999 and a broad variety of events in and about protected areas highlighting the need to protect these have been organised. Events have been celebrated across Europe on an annual basis on and around 24 May, a date that has been chosen to commemorate the creation of Europe's first nine national parks in Sweden on 24 May 1909.

  2. April 24, 1996, marked the first Noise Awareness Day spearheaded by the League for the Hard of Hearing in New York City. Today the celebration of this day takes place in more than 40 countries around the World. In Germany this day is organized by the Deutsche Gesellschaft für Akustik e.V. (DEGA) since 1998. Usually it is celebrated on one of the two last Wednesday of April.

  3. Since 1995, on 16 September each year, the International Day for the Preservation of the Ozone Layer is celebrated. This date has been designated by the United Nations General Assembly in its resolution 49/114, to commemorate the signing of the Montreal Protocol on Substances that Deplete the Ozone Layer. This commemoration around the world offers an opportunity to focus attention and action at the global, regional and national levels on the protection of the ozone layer.

  4. In 1994, the United Nations General Assembly declared June 17 the "World Day to Combat Desertification and Drought" to promote public awareness and the implementation of the United Nations Convention to Combat Desertification in Those Countries Experiencing Serious Drought and/or Desertification, Particularly in Africa. Ever since, country Parties to the Convention, organizations of the United Nations System, international and non-governmental organizations and other interested stakeholders have celebrated this particular day with a series of outreach activities worldwide.

  5. The international observance of World Water Day is an initiative that grew out of the 1992 United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro. The United Nations General Assembly designated 22 March of each year as the World Day for Water by adopting a resolution. This world day for water was to be observed starting in 1993, in conformity with the recommendations of the United Nations Conference on Environment and Development contained in chapter 18 (Fresh Water Resources) of Agenda 21. States were invited to devote the Day to implement the UN recommendations and set up concrete activities as deemed appropriate in the national context. Also a number of NGOs have used World Day for Water as a time to focus public attention on the critical water issues.

  6. The World Ocean Day was first proposed in 1992 by the Government of Canada at the Earth Summit in Rio de Janeiro. Although not yet officially designated by the United Nations, an increasing number of countries mark June 8th as an opportunity each year to celebrate the world ocean.

  7. By resolution 44/236 (22 December 1989), the General Assembly designated the second Wednesday of October International Day for Natural Disaster Reduction. The International Day was to be observed annually during the International Decade for Natural Disaster Reduction, 1990-1999. In 2001, the General Assembly decided to maintain the observance of the International Day for Natural Disaster Reduction on the second Wednesday of October (resolution 56/195 of 21 December), as a vehicle to promote a global culture of natural disaster reduction, including disaster prevention, mitigation and preparedness.