# Why it is that we have periods of night and periods of day?

##### 1 Answer

Dec 28, 2015

#### Answer:

Earth is spherical body.We get sunlight from one side of Earth The area we get light we call day.

#### Explanation:

As earth makes a rotation in 23 hours 56 minutes and 4 seconds we get a complete day..At equator we get 12 hours light and 12 hours darkness..Day night timings vary because of Earths axial tilt of 23.4 degree,