Earth Day English

Meaning Earth Day meaning

What does Earth Day mean?

Earth Day properNoun

— (North American countries) April 22; Created in 1970, global day of observance of the need to protect the earth.

— global day of observance of the need to protect the earth

Earth day noun

— (science fiction) A day in Earth time; the period it takes planet Earth to revolve once; a period of 24 hours.