As the sun arcs across the sky in daytime, the light is harsh and creates hard, deep shadows, which is why landscape photographers tend not to shoot during the main part of the day. When the sun starts to approach the horizon however, that is a different matter. The closer the sun is to the horizon, the more atmosphere it has to shine through. This has a softening effect on the quality of the light and reduces overall contrast in the scene. Shadows are long but softer and colours are enriched. The light of a sunrise has quite a cool bluish colour temperature, whilst the light of a sunset, particularly if there is a lot of dust in the atmosphere, can be very warm orange and reds.
Sounds like a…