Earth Day is observed every year on April 22.

Since the question is simple, here’s the key info in a compact way:

  • Earth Day is an annual environmental awareness day.
  • It takes place on the same calendar date each year: April 22.
  • Many countries and organizations mark it with activities like clean-ups, tree planting, and climate action events.

TL;DR: Earth Day falls on April 22 every year.