Every solar eclipse impacts the overall light level observed during the day. Normally, the level of light intensity varies in non-eclipse conditions, which is driven by the degree of cloud coverage and type of cloudiness. Thick cumulus clouds can reduce the daylight up to 1000 times. The illuminance level changes during the solar eclipse is one of the elements comprising the general atmosphere response. The model of changes the solar illuminance can be considered in two basic cases including the covered or uncovered center of the solar disk. The importance of these cases lies in the limb darkening phenomenon, which takes hold when the eclipse magnitude is higher than 0.5. Standard light level changes measurements during the solar eclipse cover the solar direction only. The total solar eclipse 2017 was first, where measurements such as this were headed away from the Sun. It was found, that light level changes are different between symmetrical moments of the eclipse. They depend on the umbral position on the sky as well as the haze concentration, which determines the strength of light scattering in the atmosphere.