1. You placed your Day-Night Globe in direct sunlight.
2. You oriented it such that
a. Your location on the globe is at its very top; and
b. Its north pole points toward the true geographic north.
What does this accomplishes?
Sun rays hit Your DNG exactly the same way they are hitting planet Earth at the very same time!
The illuminated half of the sphere shows the Earth's half where is now daytime.
The shaded half of the sphere shows the Earth's half where is now nighttime.
The area where shade and light meet are where right now dawn and dusk are
Dusk is where light is west of the shade.
As the earth rotates
eastbound the sunlit areas on both Earth and your DNG move toward the west.
If you wait till dusk, you will see the dusk area on your globe.
By the sea.
If you can do this on a seashore where sunrise or sunset takes place, you
will see a more pronounced difference between daylight and night on your
More subtle temperature differences exist even on the surface of the illuminated half of the DNG. They are the result of the angle at which sunlight hits the surface.
Position yourself such that the globe is between you and the sun (so you do not cast a shadow on the globe) and your eyes are exactly above your location -- a high-flying pilot point of view.
Pay attention to the reflection of the sun on the surface of the DNG.
* The longitude (meridian) of this reflection is the one above which the sun is currently located.
2. Move your head from side to side or in any angle.
Look at the poles.
If it is summer in the Southern Hemisphere the South Pole is illuminated.
If you rotate the DNG around its axis, you will see that there is no night
at the South Pole. At the North Pole there is long night.