Earth Hour Trailer Earth Hour 2021!Day(s):Hour(s):Minute(s):Second(s) Enter Your Earth Hour Pledge Below! Pledges to date What’s Your Earth Hour Pledge? Name State Country (CLICK TO BEGIN TYPING YOUR PLEDGE) Earth Hour an annual event occurring on a Saturday night near the equinox in March. At 8:30 in every time zone, across the entire planet, million of people unite by turning off their lights and making a pledge to support the environment for the rest of the year. Share your pledge here and I'll post it below! Send My Pledge