This presentation discusses humanity's place in the cosmos through two lenses: a Cosmic Calendar and Our Cosmic Address. The Cosmic Calendar frames major events in Earth's history and the evolution of life as if they occurred in a compressed calendar year, showing how recent life and human civilization have emerged. Our Cosmic Address places Earth and humanity within the hierarchical structure of the observable universe, from our local Solar System to the Milky Way galaxy to superclusters and potential multiverse. The presentation aims to provide perspective on humanity's small place in the grand scale of the cosmos.