Premise: Mekhong Full Moon Party (Thai: 15 ค่ำ เดือน 11 ; rtgs: Sip Ha Kham Duean Sip Et ; literally, "The 15th Day of the 11th Month") is a 2002 Thai comedy-drama about the Naga fireballs that arise from the Mekong at Nong Khai on the full moon in October. Written by Jira Maligool, the film was also Jira's directorial debut.
Hypothesis: Mekhong Full Moon Party was made 18 years ago.