Songkran (Thai: เทศกาลสงกรานต์, pronounced [tʰêːt.sā.kāːn sǒŋ.krāːn]) is the Thai New Year's national holiday. Songkran is 13 April every year. In 2019, the holiday will be observed 12–16 April as 13 April falls on a Saturday. The word "Songkran" comes from the Sanskrit word saṃkrānti (Devanāgarī: संक्रांति), literally "astrological passage", meaning transformation or change.
In northern Thailand 13 April is celebrated with gunfire or firecrackers to repel bad luck. On the next day, people prepare food and useful things to offer to the monks at the temple. People have to go to temple to make merit and bathe Buddha's statue and after that they pour water on the hands of elders and ask for their blessings. -"Songkran, everything you need to know about Thailand's famous new year water fight". South China Morning Post.