Sandhyavandhanam, one of the nitya karma prescribed by sastras to be adhered by those who are inunciated with Gayathri mantra for attaining the knowledge about the Supreme. Sandhis are the hours in a day where the Sun moves from the starting point, reaches peak and ends. Sastras prefer that one shall offer oblations using water and recite Gayatri mantra. This is a ritual, highly recommended for those who pursue the path of knowledge for attaining the Supreme. Sri Vaishnava tradition (Vadakalai) makes it mandatory for performing Thiruvaradhanam, one shall perform Sandhyavandhanam. This is a compilation from authentic resources, giving the method for performing Sandhyavandhanam.