What is the main difference in color temperature and mood between photos taken during the 'golden hour' and those taken during the 'blue hour'?

The main difference in color temperature and mood between photos taken during the 'golden hour' and those taken during the 'blue hour' lies in the specific quality of light present during each period. The 'golden hour' refers to the period shortly after sunrise or before sunset when the sun is low on the horizon. During this time, sunlight travels through a greater portion of the Earth's atmosphere. This atmospheric scattering removes bluer wavelengths of light, allowing warmer red, orange, and yellow wavelengths to dominate, resulting in a low color temperature, typically ranging from 2000K to 3500 Kelvin. Kelvin is the unit used to measure color temperature, where lower values indicate warmer, more orange/red light, and higher values indicate cooler, more blue light. The light during the golden hour is soft, diffuse, and directional, creating long, distinct shadows and a warm glow. This light quality typically evokes a mood that is warm, inviting, nostalgic, romantic, and often dramatic or serene. It can make subjects appear radiant and adds a sense of comfort or magic to a scene. In contrast, the 'blue hour' is the period of twilight immediately before sunrise or after sunset when the sun is no longer visible but its indirect light still illuminates the sky. During the blue hour, the sun is well below the horizon, and the dominant light source is the indirect ambient light from the upper atmosphere, which scatters blue wavelengths more efficiently. This results in a high color temperature, typically ranging from 9000K to 12000 Kelvin, producing deep blue, violet, and indigo hues across the sky and landscape. The light during the blue hour is soft, even, and ambient, with minimal harsh shadows. This cool, encompassing light creates a mood that is often calm, tranquil, mysterious, ethereal, or even melancholic. It can lend a sophisticated or dramatic feel to cityscapes, especially when contrasted with artificial warm lights, providing a sense of quietude and transition.