DATE_END_JULIAN DATETIME_MIN_JULIAN DAYS_PER_MONTH DAYS_PER_YEAR DT_NOBEGIN DT_NOEND END_TIMESTAMP fsec_t HOURS_PER_DAY IS_VALID_DATE IS_VALID_JULIAN IS_VALID_TIMESTAMP JULIAN_MAXDAY JULIAN_MAXMONTH JULIAN_MAXYEAR JULIAN_MINDAY JULIAN_MINMONTH JULIAN_MINYEAR MAX_INTERVAL_PRECISION MAX_TIMESTAMP_PRECISION MAX_TZDISP_HOUR MIN_TIMESTAMP MINS_PER_HOUR MONTHS_PER_YEAR POSTGRES_EPOCH_JDATE SECS_PER_DAY SECS_PER_HOUR SECS_PER_MINUTE SECS_PER_YEAR TimeOffset Timestamp TIMESTAMP_END_JULIAN TIMESTAMP_IS_NOBEGIN TIMESTAMP_IS_NOEND TIMESTAMP_NOBEGIN TIMESTAMP_NOEND TIMESTAMP_NOT_FINITE TimestampTz TS_PREC_INV TSROUND TZDISP_LIMIT UNIX_EPOCH_JDATE USECS_PER_DAY USECS_PER_HOUR USECS_PER_MINUTE USECS_PER_SEC

HOURS_PER_DAY #define HOURS_PER_DAY   24 /* assume no daylight savings time changes */