The Satyanarayana Swami Vratham is a religious observance. It can be performed on any major occassion like marriage, house warming cermony etc.,. It can also be performed on any day for any reason. The Satyanarayana Puja is usually done on the Full Moon (Purnima) day of every month or any day you wish to do it. It is also done on special occasions and during times of achievements as an offering of gratitude to the Lord Vishnu. In addition, it is said that a devotional performance of this puja will bear children to couples trying to start a family. For Auspicious days for Satyanarayana swamy Vratham, please visit http://www.hithokthi.com/showthread.php/9583-Auspicious-day-for-Satyanarayana-Swamy-Vratham-in-2013 For more vratha & poojas log on to www.hithokthi.com For our playlist of vratha & poojas http://www.youtube.com/playlist?list=PLR8xRaKglwQtPpAJJrr0XJaRN3ZSIme8p&feature=view_all For Sri Mahanyasapurvaka ekadasa vara nitya rudrabhishekam playlist visit http://www.youtube.com/playlist?list=PLR8xRaKglwQulKxm2aSmr12BO8XJ_UU3J&feature=view_all