Compare the zones of illumination by the height of the Sun and thermal conditions.

Between the tropics there is a tropical belt, here twice a year (and in the tropics, once a year) you can observe the midday Sun at its zenith. At the equator, day is always equal to night. At other latitudes of this belt, the duration of day and night varies little throughout the year. circle to the pole in each hemisphere there are polar belts, there are polar days and polar nights, the duration of which gradually increases from one day at the polar circles (and this is how they differ from all other parallels) to six months at the poles. White nights are observed for 2-3 weeks. In the temperate zones, located in the Northern and Southern hemispheres between the tropical and polar circles, the Sun does not exist at the zenith, the polar day and polar night are not observed. During the day, there must be a change of day and night, and their duration depends on the latitude and time of the year. Near the polar circles (from 60 to 66.5 degrees latitude), bright white nights with twilight lighting are observed in summer.