https://www.youtube.com/watch?v=VVYZ1YplEIc
Source: Mercola
Earth Hour is designed to form a connection with our planet by having people go dark for an hour in their time zone. This year’s Earth Hour will be on March 30th, 2019, at 8:30 PM in each person’s time zone. Anyone can participate by simply shutting off all of their lights and then doing what they wish. See more details in the above video and at earthhour.org.