Sử dụng phương thức AmLich.convertSolar2Lunar (AmLich.cs)
// Convert 14/1/1998 (January 14th 1998) to lunar day
int[] lunarDay = AmLich.convertSolar2Lunar(14, 1, 1998, 7.0) // 7.0 is fixed timezone of Vietnam
// lunarDay = [17, 12, 1997, 0.0] => 14/1/1998 (solar) -> 17/12/1997 (lunar)