The boundaries of LocalDate.ofEpochDay(long) are not correctly checked. In addition, the boundaries specified by ChronoField.EPOCH_DAY are wrong.

The following line must be added as the first line of LocalDate.ofEpochDay(long):

EPOCH_DAY.checkValidValue(epochDay);

The declaration of ChronoField.EPOCH_DAY must be changed to the following:

EPOCH_DAY("EpochDay", DAYS, FOREVER, ValueRange.of(-365243219162L, 365241780471L)),

Tests should be added to ensure that an exception is thrown when ofEpochDay() is invoked with an out of range value.