World Environment Day
UN's flagship environmental holiday since 1973. A different host country each year, a different theme, the same underlying point.
- Category
- Awareness
- Observed in
United Statesofficial
Canadaofficial
Mexicoofficial
Also on this day
Full history →Notable · 2009
A fire at a day-care center kills 49 children in Mexico- 2025The Nintendo Switch 2 video game console is released worldwide.
- 2024The Boeing Starliner is launched on its first crewed flight, carrying astronauts Barry Wilmore and Sunita Williams to the International Space Station.
- 2022A constitutional referendum is held in Kazakhstan following violent protests and civil unrest against the government.