Christians observe Sunday as a day of worship and rest and call it the Lord’s day. This is the day of the Sun as per Egyptian astrology where Saturn, Jupiter, Mars, the Sun, Venus, Mercury and the Moon, each had an hour of the day assigned to them. The body which was regent during the first hour of any day gave its name to that day. The Romans named the successive days of the week after the planets, Sunday being the first. In India it is Ravivara or Adityavara, meaning day of the Sun.