I have been working hard and dont find time to perform sandhya vandanam. I and 'another' person share the apartment. That 'another' person has come from India. He is in the same boat as mine. He advised me to perform Arghya Pradanam 3 times with Gayathri mantra, followed by Praya chitha Arghya Pradanam. He says that this equivalent of Sandhya vandanam. Is he correct? For doing this, any direction (East, North or West) is needed? Thankful if any one can guide me. Thanks in advance.