presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/serializers/LexicoderRowSerializer.java/LexicoderRowSerializer/getDate
class LexicoderRowSerializer:    @Override
    public Date getDate(String name)
    {
        return new Date(DAYS.toMillis(decode(BIGINT, getFieldValue(name))));
    }