Day and night
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The time it takes for the Earth to rotate around its axis is what we call a day (24 hours). It's Earth's spin on its axis that gives us the day/night cycle. The part of Earth that is facing the Sun experiences day while the part facing away from the Sun experiences night. A clock is at your disposal in order to show the (solar) time. Noon is the time of day when all objects cast the shortest shadows.
The animation shows how things work at the Summer Solstice. The tilt of the Earth at this time causes large differences in the length of the daylight period between cities on the same meridian.
Click on to advance time one step at a time.
Click on 'clock' to get the solar time at the meridian of Stockholm, Sweden.
- To understand the night & day cycle.