AURORA, Colo. (CBS4)- The City of Aurora will celebrate Earth Hour by going dark Saturday night.

Earth Hour is a global environmental initiative that invites individuals, businesses, governments and communities to turn out their lights for one hour at 8:30 p.m. March 23 to show support for environmentally sustainable actions.

Most City of Aurora facilities, with the exception of public safety facilities, will turn off the lights from 8:30 p.m. to 9:30 p.m. unless there is a weather event or an emergency.

As part of Aurora’s efforts to be more environmentally sustainable, the city also encourages residents to mark Earth Hour as well by switching off the lights at home during that time.

Earth Hour began in one city in 2007 and by 2012 involved hundreds of millions of people in 152 countries across every continent.

This year numerous worldwide landmarks, including the Eiffel Tower, Times Square, the Las Vegas Strip, Niagara Falls, Taipei 101 and Sydney’s Harbour Bridge and Opera House will switch off during Earth Hour.