April 22. Unitarian Universalism’s seventh principle: “Respect for the interdependent web of all existence of which we are a part” makes this a day to celebrate religiously. Themes can include: earth-centered spirituality; connecting to the divine through nature; caretaking of the environment; the interdependent web. Another day to celebrate these themes is Arbor Day, the date of which varies from state to state.
The Unitarian Universalist Ministry for Earth envisions a world in which reverence, gratitude, and care for the living Earth are central to the lives of all people. Their purpose is to inspire, facilitate, and support personal, congregational, and denominational practices that honor and sustain the Earth and all beings. They affirm and promote the seven principles of the Unitarian Universalist Association, including: "Respect for the interdependent web of all existence of which we are a part."