Tet is Vietnamese New Year and is the most important festival and public holiday in Vietnam.
An example of Tet being the definitive Vietnamese holiday is that 'Tet' itself means 'festival' and is the shortened version of 'Tết Nguyên Đán', which is Sino-Vietnamese for 'Feast of the First Morning of the First Day'.
Tet falls on the first night of the new moon in the first month of the Lunar Calendar, which in the Gregorian calendar usually takes place between the last week of January and the third week of February .