ISLAMABAD- Lights of the Parliament will be switched off during Earth Hour tomorrow to show Pakistan’s commitment of joining hands with the world for energy conservation. Speaker National Assembly Sardar Ayaz Sadiq said that the Parliament of Pakistan was the first ever legislature in the world to opt for solar energy completely. He said the lights of the Parliament will be switched off during Earth Hour to show Parliament's commitment of joining hands with the world for energy conservation, combating impacts of climate change and global warming. Earth Hour candle lighting ceremony will be held in the Parliament House from 8:30 pm to 9:30 pm tomorrow. It is celebrated on the last Saturday of March every year. Millions of people around the world switch off their lights for Earth Hour at 8.30pm (20:30) according to their local timings. This day is observed to draw the world’s attention to the cause of environmental degradation. Earth Hour is a global WWF (formerly known as World Wildlife Fund) climate change initiative. It aims to create awareness among people for taking responsibility towards a sustainable future by turning the lights off. Earth Hour is not to be confused with Earth Day.