Every year around September/October a festival called “diving the Buddha” takes place in the Pa Sak River that flows through Phetchabun.The actualbuddha shower-001 date of the festival is determined by the phases of the moon, being the 15th day of the 10th waning moon. So this year the festival is being staged between 11-15th October with the actual diving the Buddha taking place on 12th October.
Thais call the ceremony อุ้มพระดำน้ำ which means hold the buddha underwater(dive). This is pronounced Um Phra Dam Nam.