International, Movement, World Wildlife Fund (WWF)
Significance
Climate change and to save Earth
Celebrations
Mass activations to encourage the public to give an hour for the planet; Switching off national and international monuments and landmarks
Begins
8:30 pm
Ends
9:30 pm
Date
Last or penultimate Saturday of March
2023 date
March 25
2024 date
March 23
2025 date
March 22
2026 date
March 28
Frequency
Annual
Related to
Earth Day
Earth Hour is a worldwide movement organized by the World Wildlife Fund (WWF). The event is held annually, encouraging the individuals, communities, and businesses to give an hour for Earth, and additionally marked by landmarks and businesses switching off non-essential electric lights, for one hour from 8:30 to 9:30 p.m., usually on the last Saturday of March, as a symbol of commitment to the planet.[1] It was started as a lights-off event in Sydney, Australia, in 2007.
Occasionally, in years when Holy Saturday falls on the last Saturday of March (as in 2024), Earth Hour is held a week earlier.
^"About Us". Earth Hour. Retrieved March 31, 2014.
EarthHour is a worldwide movement organized by the World Wildlife Fund (WWF). The event is held annually, encouraging the individuals, communities, and...
Arbor Day Carbon footprint "Earth", a song by Lil Dicky Earth Anthem Earth Charter EarthHourEarth Overshoot Day Earth Strike Ecology Flag Environmental...
constant due to long term variations in the Earth's rotation, the hour was finally separated from the Earth's rotation and defined in terms of the atomic...
around its own axis in slightly less than a day (in about 23 hours and 56 minutes). Earth's axis of rotation is tilted with respect to the perpendicular...
Fogelberg), "Mother Earth (Natural Anthem)" by Neil Young, "Earth Song" by Michael Jackson, "EarthHour Anthem" by Andrew Huang and "Earth Anthem" by Abhay...
addition, WWF has launched several notable worldwide campaigns, including EarthHour and Debt-for-nature swap, and its current work is organized around these...
meridian to the hour circle passing through the object. Unlike right ascension, hour angle is always increasing with the rotation of Earth. Hour angle may be...
Earth's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Over time Earth's gravity...
(Christmas Island, Australia) American Diabetes Alert Day (United States) EarthHour (International observance) European Summer Time begins Seward's Day (Alaska...
increase in conservation fundraising by charities and advocacy groups. EarthHour – 8:30 pm (local time), next one will take place on 22 March 2025. Index...
2017, Maroon 5 participated during the World Wide Fund for Nature (WWF) "EarthHour" campaign. Maroon 5 partnered with Interscope Records and gave a donation...
achievements in business and for her service to the country; Ambassador EarthHour Sri Lanka. 2017 - 'Passionate 2017' by Business Today. 2018 - Woman of...
occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially. Such an alignment...
the hour angle is the dihedral angle between the meridian plane (containing Earth's axis and the zenith) and the hour circle (containing Earth's axis...
by ACT on Campus president Rick Giles. See Young Act § Opposition of EarthHour and "I think my argument is so powerful". Know Your Meme. 10 June 2010...
account as being literal with six 24 hour days. Thomas Chalmers popularized gap creationism, which is a form of Old Earth Creationism. Additionally it was...
decision makers to implement effective climate policies. Stordalen was an EarthHour ambassador in 2011. for Norway. Stordalen is also an advocate for animal...
Ballet Theatre and Kirov Academy of Ballet. Smith organized and hosted an EarthHour 2008 event in Vancouver. The event had over 150 attendees and was broadcast...
exposure limit at 6 mg/m3 over an 8-hour workday. OSHA has set a permissible exposure limit for diatomaceous earth as 20 mppcf (80 mg/m3/%SiO2). At levels...
with much of the Las Vegas Strip was darkened for one hour as the city took part in EarthHour. On May 14, 2009, Las Vegas Mayor Oscar Goodman and the...
takes 24 hours to circle the Earth, the same period as the Earth’s own rotation. All satellites in MEO have an orbital period of less than 24 hours, with...
sunshine hours is a climatological indicator, measuring duration of sunshine in given period (usually, a day or a year) for a given location on Earth, typically...