How many days until Earth Hour?
Earth Hour is on Saturday, March 27, 2027. There are 150 days left until Earth Hour. Earth Hour is observed on Last Saturday in March, usually from 8:30 p.m. to 9:30 p.m. local time.
Date & Planning Details
Earth Hour is observed on Last Saturday in March, usually from 8:30 p.m. to 9:30 p.m. local time.
Usually treated as an observance, not a day off.
Earth Hour Calendar (2027-2100)
| Year | Date | Day | Days Left | Weekend? |
|---|---|---|---|---|
| 2027 | March 27 | Sat | 150 days | Yes |
| 2028 | March 25 | Sat | 514 days | Yes |
| 2029 | March 31 | Sat | 885 days | Yes |
| 2030 | March 30 | Sat | 1249 days | Yes |
| 2031 | March 29 | Sat | 1613 days | Yes |
| 2032 | March 27 | Sat | 1977 days | Yes |
| 2033 | March 26 | Sat | 2341 days | Yes |
| 2034 | March 25 | Sat | 2705 days | Yes |
| 2035 | March 31 | Sat | 3076 days | Yes |
What is Earth Hour?
Earth Hour is a global environmental awareness event held on the last Saturday in March. People, landmarks, schools, workplaces, and local groups often switch off non-essential lights for one hour as a symbolic action for nature, climate awareness, and everyday energy choices.
How People Observe It
Many people mark Earth Hour by turning off non-essential lights, joining local events, spending an hour without screens, discussing climate and nature topics, or planning small habits that reduce waste and energy use.
History and Background
Earth Hour began as a lights-out event in Sydney and later became a worldwide annual action linked with environmental awareness.
Frequently Asked Questions
When is the next Earth Hour?
The next Earth Hour is on March 27, 2027.
Is Earth Hour always on the same date?
No. Earth Hour is usually held on the last Saturday in March, so the calendar date changes each year.
What time does Earth Hour start?
Earth Hour is usually observed from 8:30 p.m. to 9:30 p.m. local time.
Do people have to turn off all lights for Earth Hour?
No. The usual idea is to switch off non-essential lights while keeping safety, accessibility, and practical needs in mind.
Is Earth Hour a public holiday?
No. Earth Hour is an awareness event, not a public holiday.
Who can take part in Earth Hour?
Individuals, families, schools, workplaces, communities, and local organizations can take part in simple and safe ways.
Earth Hour Timeline
These milestones show how Earth Hour developed from a local event into a global annual observance.
The first Earth Hour was held in Sydney, Australia.
Earth Hour expanded beyond Australia and reached cities in several countries.
The event grew into a broader global climate awareness campaign.
Earth Hour encouraged actions beyond the hour through wider environmental commitments.
Earth Hour activities were linked with public discussion around climate action and nature protection.
More Upcoming Days
This countdown uses the selected timezone to keep the live timer and date table consistent.