Civil Twilight

Civil twilight marks the transition between daylight and darkness, occurring twice daily when the sun sits between 0° and 6° below the horizon. As the brightest of the three twilight phases (civil, nautical, and astronomical), civil twilight provides enough ambient light for most outdoor activities to continue without artificial lighting. For photographers, civil twilight represents a golden opportunity—literally and figuratively—as this period encompasses both golden hour and blue hour depending on solar angle. During evening civil twilight (dusk), the sun has just set but the sky remains bright, gradually shifting from warm sunset colors to cooler twilight blues. Morning civil twilight (dawn) reverses this process, with the sky brightening from deep blue to warm pre-sunrise hues.

The light during civil twilight is characteristically soft and even, with minimal harsh shadows, making it excellent for portrait photography, street photography, and architectural work. Unlike midday's intense overhead sun, civil twilight offers directional light that models subjects beautifully while maintaining manageable contrast ratios. Landscape photographers use civil twilight for scenes requiring detail in both highlights and shadows, as the diffused light allows broader dynamic range than midday sun. The duration of civil twilight varies dramatically by latitude and season—at the equator it lasts about 25 minutes year-round, while at high latitudes during summer it can extend for hours or even merge with the following twilight phase, creating the phenomenon known as white nights.

Weather significantly impacts civil twilight photography: clear skies allow vibrant sunset and sunrise colors to dominate, while overcast conditions create more muted, atmospheric tones. PhotoWeather tracks civil twilight timing with astronomical precision, combining solar position calculations with real-time weather data to help you plan shoots during this versatile lighting period that bridges day and night.