Oracle PL/SQL/Date Timezone/Date Time Interval
Date value type, value and interval value
Datetime field Datetime values Interval values
YEAR -4712 to 9999 (but not zero) Any positive or negative integer
MONTH 1 to 12 0 to 11
DAY 1 to 31 Any positive or negative integer
HOUR 0 to 23 0 to 23
MINUTE 0 to 59 0 to 59
SECOND 0 to 59.999999999 0 to 59.999999999
TIMEZONE HOUR -12 to 13 �
TIMEZONE MINUTE 0 to 59 �