BULATSA joins the global initiative “Earth Hour” and on March 25 will turn off the facade lighting of the buildings at the Unified Air Traffic Control Centre in Sofia and at the Airport Centres between 8:30 PM and 9:30 PM. “Earth Hour” is the largest initiative dedicated to the preservation of our common home – planet Earth. It is held annually to raise awareness of the importance of taking action to preserve the Earth. Traditionally, on the last Saturday of March, between 8:30 PM and 9:30 PM, millions of people are set to switch off their lights for 60 minutes in a symbolic movement to save the planet. Landmarks around the world also turn off their lights, thus expressing solidarity with the fight against climate change.