day and night symbol

day and night, morning, evening, sunrise, sunset, daylight, nighttime, twilight, dawn, dusk, sun, moon, stars, sky, celestial, light and dark, day sky, night sky, sun rise, sun set, moonlight, starlight, evening sky, morning light, daily cycle, circadian rhythm, day cycle, night cycle, solar, lunar, horizon, daylight hours, nighttime hours, sky view, day and night scene, natural cycle, light cycle, dark cycle, day night transition, day night contrast, celestial cycle, time of day