The Sun or Surya is a royal planet and the King in astrology. It represents the soul, will power, father, paternal relations, the King or the high officials. It's hot and angry; colour is red; metal is gold and gem is ruby. The Sun represents the eastern direction. The Sun stays in each rasi for one month and takes one year to complete the round of the zodiac. Its motion is fixed and a lot of Indian festivals are as per the Sun's entry into the various signs. For example on January 14, it enters Makara and this day is celebrated as Makara Sankranti. On April 13th/14th, it enters Mesha and this day is celebrated as Baisakhi. The change in the seasons is also linked to the Sun's entry into various signs and Nakshatras. He is the Pitra karaka or planet connected with father.