The sun does not shine in the same way everywhere on earth: Because of the inclination of the earth axis to the sun, the position of the sun
changes in the course of the year.
During June (Northern summer
), the north pole is turned towards the sun, and the sun shines there for 24 hours per day: it is Polar day
. At the same time, the sun does not shine at all at the South Pole: then, Polar night
prevails there. In December, the opposite occurs: the South Pole experiences Polar day
and the North Pole Polar night
. This also leads to the seasons
Between both Poles, the daily lengths also change.
You can observe this in the following picture series for nine sample locations. These pictures are meteograms
: they show the weather of the coming 6 days and nights: the temperature in the highest block, the precipitation in second, clouds in third and wind in the fourth block - for a defined place. The vertical yellow bars in the background show the daily length at this palce.
The following nine meteograms are arranged around the globe - from the north to the south. The places are always spaced 20 degrees of latitude apart (see Figure 1).