National Hockey League arenas rely on artificial light, but this Saturday, all 30 NHL teams will observe Earth Hour, the global initiative to have every city reduce its carbon footprint by shutting off lights starting at 8:30 p.m. for a full hour on March 31.
Though, the 20 teams playing 10 games scheduled to occur that night will need some light to see. The NHL will be turning off all “non-essential lights” during this time, allowing hockey fans to see their favorite teams and hockey players play safely – fights not included.
Hundreds of millions of people in every country around the world will shut off their lights for Earth Hour, now in its fifth year, the organization says on its website. Originally started by the World Wildlife fund in 2007, the purpose, they say, is to raise awareness of global climate change and have the citizens of Earth visibly show their support for a movement toward sustainable energy.
This year, Earth Hour launched a YouTube campaign called “If You Will, I Will,” in which celebrities pledge to do something whacky if a certain number of people pledge do support environmentally-friendly causes like giving up plastic bottles, start recycling and using re-useable shopping bags.