What Is Twilight? Civil, Nautical, and Astronomical Twilight Explained
Learn the differences between civil, nautical, and astronomical twilight, including when each stage occurs and how much natural light remains in the sky.
Sunrise and Sunset Times
What are golden hour and blue hour?
Learn what golden hour and blue hour are, when they occur, and how their warm and cool light creates different colors in the sky.
What Is Solar Noon? Why It Doesn’t Always Happen at 12:00 PM
Solar noon is the time when the Sun reaches its highest point in the sky for a specific location. Despite its name, it does not always occur at 12:00 PM.
The Science Behind Colorful Sunrises and Sunsets
Learn why sunrises and sunsets glow in shades of red, orange, pink, and purple, and how the atmosphere and clouds create these colors.
Why Do Sunrise and Sunset Times Change Throughout the Year?
Learn why sunrise and sunset times change throughout the year and how Earth’s axial tilt, latitude, and seasons affect daylight.
What Do Sunrise and Sunset Azimuths Mean?
Learn what sunrise and sunset azimuths mean, how they indicate the Sun’s direction, and why they change with the seasons and your location.