The word “rutilant” (from the Latin “rutilus,” meaning “reddish”) describes a specific type of glowing, flickering, ruddy, golden light. Photographers call the exact time of day when they can capture such light from the sun the “golden hour.” The exact time of day varies as the sun moves across the sky, but the rule of thumb to capture this rutilant light is about an hour after sunrise and about an hour before sunset. This is the sweet spot to take photos with the diffuse light in rutilant tones of red, orange, and gold.