Ravivar or Sunday Vrat is a superior Vrat if one wishes for a life full of name, fame, respect, money, wealth, happiness, peace, and a fit healthy body.
Wake up before sun rise and get ready. Wear clean and fresh clothes. Fast the whole day and eat only once. The food must be either completely vegetarian or comprised of just fruits/milk/yogurt (Fal Ahar). The devotee must try to abstain from food made with oil or food with salt in it. Eating salt is not allowed today.
'Arghya' or water is offered to the Lord Surya Dev in the morning and evening. The Vrat Katha or story should be heard today. Surya Bhagwan is the God of light and life. His blessings bring wisdom and 'kirti' or good name to the devotee.