Earth Hour marks 20th anniversary, urges sustained eco-friendly habits beyond 60-minute lights-off

Exam-focused facts from the 29 March 2026 current affairs briefing.

Key facts

Earth Hour is organised annually by the World Wide Fund for Nature (WWF).
Participants switch off non-essential lights for 60 minutes from 8:30 p.m. to 9:30 p.m. on March 28.
The movement began in Sydney in 2007 and now involves millions across more than 190 countries.
The 20-year milestone campaign emphasises reducing waste, conserving energy daily, and engaging in community conservation efforts.
In the Philippines, an in-person celebration will be held in Pasig City with environmental advocates and youth groups.