It is a global event organized by the World Conservation Organization (WWF) which takes place on the last Saturday in March.
It was first held on March 28, 2008 in 35 countries around the world and over 400 participating cities. Known worldwide as Earth Hour, this action, organized by WWF for the seventh year in a row, has evolved from a one-city initiative into a major global movement involving more than 7,000 cities and towns in 152 countries last year, hundreds of millions on all 7 continents.
With the extinguishing of many world landmarks such as the Eiffel Tower, the Egyptian Pyramids, the Tower of London, the Greek Acropolis, the Harbor Bridge in Sydney or the Empire State Building in New York.
Event Earth Day, organized with the support of the Croatian Commission for UNESCO, for the first time in many years and the Zagreb Cathedral will turn off its decorative lighting and thus join the many cultural attractions of the world that will sink into darkness tonight at 8:30 pm for planet Earth. Along with Kaptol in Zagreb, the walls in Dubrovnik with Stradun, Osijek's Tvrđa, Split's Riva with the southern facade of Diocletian's Palace, Vukovar's water tower, the centers of Varaždin, Koprivnica, Krapina and many other cities will be darkened.
This year's Earth Hour is held in a challenging moment and offers another moment of solidarity and an opportunity to take care of each other and the home we all share, our planet Earth.