MONTH_DAY top-level constant

Implementation

const Map<int, int> MONTH_DAY = {
  1: 31,
  2: 28,
  3: 31,
  4: 30,
  5: 31,
  6: 30,
  7: 31,
  8: 31,
  9: 30,
  10: 31,
  11: 30,
  12: 31,
};