A looping SVG animation depicts a sunset and sunrise over a stylized landscape. The sun moves vertically against a sky that transitions from aliceblue to indigo, while layered green and orange landmasses shift in color. Built with raw SVG elements—including `<radialGradient>`, `<linearGradient>`, `<circle>`, and `<path>`—the scene uses `<animate>` tags to cycle attribute values over 15 seconds, creating a continuous day-night effect.