private boolean signDifferenceBetweenEarnings( LocalDate currentEarningDate, LocalDate historicalEarningsDate) { int YEAR_AND_A_HALF_IN_DAYS = 528; if ((currentEarningDate.toEpochDay() - historicalEarningsDate.toEpochDay()) > YEAR_AND_A_HALF_IN_DAYS) { return true; } return false; }