Wan Awk Pansa (Thai: วันออกพรรษา) is the last day of the Thai/Laos observance of vassa. It occurs in October, three lunar months after Wan Kao Pansa. The day is celebrated in Isan by illuminated boat processions (Thai ไหลเรือไฟ lai reua fai, Isan ไหลเฮือไฟ lai heua fai), notably in Nakhon Phanom on the Mekong river, and in Ubon Ratchathani on the Mun. Additionally, some celebrants individually launch their own, smaller vessels. Boat races also take place around this time in many places throughout the country.