The earth rotates on its axis.The earth is tilted on its axis 23.5 degrees.The rotation of the earth causes day and night.It is night in the places where the light of the sun does not fall.The sun is the source of light on Earth.Places that receive the sunlight are experiencing daytime.The earth moves in a west to east direction or from west to east.One complete rotation of the Earth is equivalent to 24 hours.