Decorative Sunrise~Sunset Beautiful Color Garden Sundial - Blue Timeless Design: A sundial is a classic garden ornament that tracks the passage of time by casting a shadow from its gnomon onto a flat surface. Crafted from weather-resistant materials like stone, metal, or concrete, a sundial is built to withstand outdoor elements year-round. Beyond its decorative appeal, a sundial serves a practical purpose by allowing you to tell the approximate time of day from the sun's position.