Sandhyavandanam & its significance
Our planet not only goes around the sun but also rotates on it's own axis. Sun rise and Sun set are caused by the rotation of earth on it's own axis. At every instant of time , there will be Sunrise at one place and Sunset at another place. At Sunrise , rays of Sun will hit that part of the earth for the first time for that day , resulting in release of energies .Similarly at Sun set there will be withdrawal of energies.