solar2Lunar function
将阳历日期转为阴厉日期
Implementation
LunarDate solar2Lunar(String date) {
final dates = normalDateFromStr(date);
var solar = Solar.fromYmd(dates[0], dates[1], dates[2]);
var lunar = solar.getLunar();
var lunarMonth = lunar.getMonth().abs();
return LunarDate(
lunarDate: lunar,
lunarYear: lunar.getYear(),
lunarMonth: lunarMonth,
lunarDay: lunar.getDay(),
isLeap: lunar.getMonth() < 0,
);
}