Earth Day is a day designed to inspire awareness and appreciation for the Earth's environment. It is on 22 April. It was founded by U.S. Senator Gaylord Nelson (D-Wisconsin) as an environmental teach-in in 1970 and is celebrated in many countries every year. The first Earth Day was in 1970. Earth Day is in spring in the Northern Hemisphere and autumn in the Southern Hemisphere. The United Nations celebrates Earth Day each year on the spring equinox, which is often 20 March. This is a tradition which was founded by peace activist John McConnell in 1969. The United Nations first celebrated Earth Day on the spring equinox in 1971. This was also the first time ever that the United Nations celebrated Earth Day. The first Earth Day on the spring equinox was also in 1970. -- The Abrahamic religions - also known as Abrahamic faiths, Abrahamic traditions, religions of Abraham and semitic religions - are historically the world's three primary monotheistic faiths of Judaism, Christianity, and Islam, which share a common origin and values. - For some 1,300 years their histories and thought have been intertwined. They are considered inextricably linked to one another because of a 'family likeness' and a certain commonality in theology. They are faiths that recognize a spiritual tradition identified with Abraham. The sacred narratives of all three of these religions feature many of the same figures, histories and places in each, although they often present them with slightly different roles, perspectives and meanings. Today, there are an estimated 3.8 billion followers of these three Abrahamic religions,accounting for more than half of the world's population. - Celebrate Earth Day interreligious and monotheistic by joining together in the sight of our mutual god: Let's read Holy Scriptures together, let's pray together, let's spend a festive day with each other and let's hope together - for our planet Earth and for a mankind living in peace.