* Sunrise and Sunset: During these times, the sunlight has to travel through a lot more atmosphere to reach our eyes. The shorter wavelengths of light (blue and green) get scattered away by the atmosphere, leaving mostly the longer wavelengths (red and orange) to reach us. This is why the sun appears red or orange at these times.
* Daytime: During the day, the sunlight travels through less atmosphere, so we see more of the full spectrum of colors, resulting in a white or yellowish appearance.
* Our Perception: The human eye is more sensitive to certain wavelengths of light, making us more likely to perceive the Sun as yellowish during the day.
So, while the Sun itself is white, we perceive it differently due to the way light interacts with the atmosphere and our own visual perception.