News Earth Hour this Saturday! Join #MomentOfDarkness SHARE ON: Smith Autumn, contributor, Wednesday, Mar. 26th, 2014 It’s time for lights out! This Saturday marks the eighth annual Earth Hour. WWF Canada President and CEO David Miller says they have launched a new element of Earth Hour with the hashtag ‘Moment of Darkness’. They are encouraging people to share a video of what they think during Earth Hour. Miller says 170 countries will be participating this year, they’re biggest turnout yet. Chris Hadfield is also jumping on board, posting his #MomentofDarkness video. Haliburton County schools are joining in the action, too when they turn their lights off at 8:30 on Saturday night.