This fire has been burning since the Temple was built nearly 2500 years ago and is kept burning by the priests that reside there. Due to this religion's influence, the Iranian calendar follows the movement of the Sun and NOT the Moon as with the rest of the Middle East and thus the exact time of their New year differs annually according to the turning of the Sun for the Spring Equinox. The symbol of Zoroastrianism is the Farvahar (or Ascending symbol) and is prevalent all over Iran and in Iranian culture. It is the Ascended One holding a ring in his hand (representing a promise to ascend and enlighten the others) and three layers of wings (representing thinking good thoughts, speaking good words and performing good deeds), all part of the Zoroastrian doctrine.