nowruz is the traditional iranian festival of spring which  start at the exact moment of the vernal equinon,commenchng the start of the spring. itis considered as the start of the new year amongiranians .the name comes avestan meaning [new day / day light].noruz is celebrated march 20/21 each.year at the time the sun enters aries.[from the saite nowruze persian new year][fram leila karami]