This Sunday, 5th June is World Environmental Day (DAY) and every year since 1973 this day has been to help stimulate awareness of the environment within countries all over the world. This Sunday, 5th June is World Environmental Day (DAY) and every year since 1973 this day has been to help stimulate awareness of the environment within countries all over the world. This Sunday, 5th June is World Environmental Day (DAY) and every year since 1973 this day has been to help stimulate awareness of the environment within countries all over the world. This Sunday, 5th June is World Environmental Day (DAY) and every year since 1973 this day has been to help stimulate awareness of the environment within countries all over the world. This Sunday, 5th June is World Environmental Day (DAY) and every year since 1973 this day has been to help stimulate awareness of the environment within countries all over the world.