Calendar 22 January Holocaust Memorial Day The European Union and other states celebrate this date as a European Day for commemoration of Holocaust and prevention against criminal against humankind. It is a day of remembrance and for actions against Nazi ideologies everywhere in the world.    2 February World Wetlands Day Wetlands, one of the important systems for ecological balance on our planet, are endangered. Many birds, fish and other living world are left without any space to live in due to their dryness or pollution. The World Wetlands Day has a goal to take an action for their preservation.