How Many Days Until Earth Hour?
There are 262 days until Earth Hour, on Saturday, March 27, 2027. Earth Hour is observed on the last Saturday of March, when people switch off lights for one hour to raise awareness about energy and the environment. The counter resolves the moving date for you.
Countdown to Earth Hour
Saturday, March 27, 2027About the countdown to Earth Hour
As the last Saturday of March, Earth Hour ranges from March 25 to March 31, so a live countdown is more reliable than a fixed number.
The observance centres on a symbolic lights-out hour, usually in the evening local time, held in cities around the world.
The counter above reads from your device clock and refreshes every second, so the days, hours, minutes and seconds always reflect the time remaining right now. When Earth Hour arrives, the page quietly moves its target to the following year so the countdown never runs out of road.
Frequently asked questions
How many days until Earth Hour?
There are 262 days until Earth Hour, which falls on Saturday, March 27, 2027. The live counter above updates every second.
What day of the week is Earth Hour this time?
The next Earth Hour falls on a Saturday (Saturday, March 27, 2027). The weekday can change from year to year, which the countdown accounts for automatically.
Does this countdown update every year?
Yes. Once Earth Hour passes, the page rolls its target forward to the next occurrence, so the countdown stays accurate without any manual updates.
Is the Earth Hour countdown based on my time zone?
The day count uses your device's local date, so the number of days matches your own calendar. The live seconds tick down from your local clock.
Count down to another event
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