if (dayBeforeFirstDayOfMonth === -1) {
    for (let i = 7; i > 0; i--) {
      let firstDayOfMonthCopy = firstDayOfMonth.clone();
      firstDayOfMonthCopy = firstDayOfMonthCopy.subtract(i, 'd');
      fourtyTwoDays.push(firstDayOfMonthCopy);