vietnamese's new year is celebrated according to the lunar calendar .It is officially known as the lunar new year or tet it occurs in late january or early february the exact date changes from year to year.Vietnamese people usually make preparation for tet holiday several weeks beforehand to clean and decorate their homes,cook special food such as sticky rice cakes ,and make offerings on the family altars .on the new year's eve, the whole family gets together for the reunion dinner in which many different kinds of dishes are served. On Tet , people usually put on their new clothes , give one anotherthe tet season's and pay mutual visit