Songkran (Thai: เทศกาลสงกรานต์, pronounced [tʰêːt.sā.kāːn sǒŋ.krāːn]) is the Thai New Year's festival. The Thai New Year's Day is 13 April every year, but the holiday period includes 14–15 April as well. The word "Songkran" comes from the Sanskrit word saṃkrānti (Devanāgarī: संक्रांति), literally "astrological passage", meaning transformation or change. The term was borrowed from Makar Sankranti, the name of a Hindu harvest festival celebrated in India in January to mark the arrival of spring. It coincides with the rising of Aries on the astrological chart and with the New Year of many calendars of South and Southeast Asia, in keeping with the Buddhist/Hindu solar calendar.