Each year on the third Saturday in March millions across the globe take part in a stand against climate change. Earth Hour, started in Australia in 2007, asks each of us to turn the lights off in our home for just one hour. Last year 128 countries participated in the movement, making it the world's largest climate change initiative.
The time to switch off the lights, eat dinner in candlelight, watch a movie, or enjoy the stars (if you're somewhere warm, luckies)?
8:30 PM (local time), Saturday, March 26.
Set your phone alarms now.