Tet Nguyen Dan, or the festival of the dawn of the first of the year. Vietnamese popular short called tet Festival by begins 1 week the day before the lunar new year, up On the day of the new 15 dinner. Of the day, the sun is far the most to the equator in winter. With the autumnal equinox in the spring. This festival was celebrated in total faith in God of Taoism.Buddhism, including respect for ancestors .