Question

How dose sun tell us the time ?

Answer 1

Answer:

the sun tells us the time by changing its positions

Answer 2

Answer:

You can only use a sundial if the sun is shining. Your sundial works as a clock because the Earth rotates. As the Earth spins, the Sun seems to move across the sky. When the sun appears over the horizon at dawn, its light strikes the nail from the side, making a long shadow.