Tết ([tet˧˥] or [təːt˧˥]), Vietnamese New Year, Vietnamese Lunar New Year or Tet Holiday, is the most important celebration in Vietnamese culture. The word is a shortened form of Tết Nguyên Đán (節元旦), which is Sino-Vietnamese for "Feast of the First Morning of the First Day". Tết celebrates the arrival of spring based on the Vietnamese calendar, which usually has the date falling in January or February in the Gregorian calendar.[1]