While light is one of the most important elements in a designers arsenal, it is also one of the most susceptible to change. The things that light affects are known as scents. SCents are changes in light that can be affected by distance, level of light, time of day, etc.
For example, the scents of different countries can be quite different. In Japan, for example, lightscapes are often blue or green, while in other parts of the world, the light can be red or green. SCents can also be affected by the device itself. For example, the scents of a phone that is held close to the ground can be quite different from those of a phone that is held high up in the air.
This is why it is important to make sure that your light sources are appropriate for your location and the time of day. For example, strong light will be affected by the time of day and whether the area is dark or light. federation of light sources across the world provides an example of a report that shows the different SCents available in each country.
As a designer, you need to be aware of the things light affects and try to create lightscapes that are appropriate for your location and time of day.