During the blue "hour", red light passes through space while blue light is scattered in the atmosphere, and thus reaches Earth's surface. Blue hour usually lasts about 20–96 minutes right after sunset and right before sunrise. Time of year, location, and air quality all have an influence on the exact time of blue hour. [7]

2019年7月19日 · Blue hour is simply the time of day before sunrise and after sunset when the atmosphere has a deep, dark blue color. Like the famous “golden hour,” blue hour is not really an hour. Its exact length depends on your latitude, time of year, and weather conditions.

Definition of the Blue Hour. On a clear day, the transition between day and night can be a colorful spectacle, with the indirect sunlight tinting the sky yellow, orange, red, and blue. The blue hour refers to the phase of twilight when the Sun is so far below the horizon that the light's blue wavelengths dominate.

2014年6月11日 · For sunlight, we can distinguish the following light phases depending on the elevation of the sun: golden hour, blue hour, twilights, daytime and nighttime. Starting time and duration of...

2014年8月30日 · The blue hour - when the sun is below the horizon, when the sky is deep blue and the landscape is suffused with bluish light - is a good time to take photos.

2019年12月27日 · During the sunset, the length of atmosphere the light from the Sun has to travel through becomes so long that the blue is depleted, giving the sky a golden color. However, it seems this can't be the full story, because photographers know that after sunset, there is a so-called blue hour where the color of the sky becomes a deep blue again. Why ...

2017年3月22日 · Blue “hour” is an even shorter time than golden hour. Shorter because blue hour describes the sun from 4*-6* below the horizon. The sun travels a shorter distance during this time, so naturally it takes up less time.

2024年12月26日 · The blue hour refers to the period of twilight when the sun is just below the horizon, casting a soft blue glow across the sky. Scientifically, this happens because the sun’s light scatters in the atmosphere, emphasizing shorter wavelengths, such as blue.

2025年1月14日 · Blue hour is a period of twilight in the morning and evening (directly before sunrise and after sunset) when the sun is below the horizon, and the sky takes on a deep blue hue. This time is special for photography because the lighting and hues are different than any other time of the day.

2024年8月29日 · When the blue hour rolls around, photographers are presented with a golden opportunity to capture breathtaking images. Understanding when to shoot during this magical time is crucial to making the most of it. Let’s dive into the peak blue hour photography time and the factors that make it a photographer’s dream. Peak Blue Hour Photography Time