isDoubledMonth static method

dynamic isDoubledMonth(
  1. int tYear,
  2. int month
)

CHECK IF IT IS DOUBLE MONTH OR NOT

Implementation

static isDoubledMonth(int tYear, int month) {
  var mp = 12 * (tYear - YEAR_DIFF - YEAR0) + month;
  return (2 * mp) % 65 == BETA % 65 || (2 * mp) % 65 == (BETA + 1) % 65;
}