It is the time for Khmer New Year which is the Cambodian New Year. Starting April 14 to the next three days, the Khmer New Year 2019 is being celebrated. It marks the beginning of the traditional Lunar New year and is a holiday for people of Cambodia. Just as Indian communities are also celebrating the harvest festival, Cambodians too mark the harvest season. Farmers enjoy the fruits of the labor before the beginning of the rainy season there. Khmer people who do not reside in the country also mark this festival on the approaching weekend. The celebrations are rooted in Buddhist traditions. Khmer New Year is celebrated for 3 days, each of the days having a special significance.
In full: https://www.latestly.com/lifestyle/festivals-events/khmer-new-year-2019-know-date-significance-and-celebrations-of-cambodian-new-year-starting-today-767370.html