Lights-Out Hour DC

Lights-Out Hour DC on Saturday March 25 is a voluntary event in which individual residents, building managers, and custodians of public monuments dim or extinguish non-essential indoor and outdoor lights for one hour beginning at 8:30 p.m.

Lights-Out Hour DC coincides with international “Earth Hour,” and your participation will draw attention to climate change and the many harms that light pollution presents to human health and the environment.

For further information or to volunteer, contact Julia Kampelman Stevenson at jks.ei@verizon.net or visit the DC Chapter of the International Dark-Sky Association on Facebook.