Hà Nội plans various activities in response to Earth Hour 2023 stockbot 0 342 2023.02.18 11:46 https://vietnamnews.vn/society/1484717/ha-noi-plans-various-activities… + 2 https://vietnamnews.vn/rss/society.rss + 5 Public and advertising lighting systems will be switched off in some public areas and streets from 8.30pm to 9.30pm on March 25.