General Bug Report: Two digit years are inconsistant in psql

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Keith Paskett
Your email address : keith(dot)paskett(at)sdl(dot)usu(dot)edu

Category : unknown
Severity : non-critical

Summary: Two digit years are inconsistant in psql

System Configuration
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Operating System : sparc-sun-solaris2.7

PostgreSQL version : 6.4.2

Compiler used : gcc 2.8

Hardware:
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Versions of other tools:
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Problem Description:
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In a date entered as '01-02-03' the last number is used for
the year but entering '33-04-05' the first number is used
for the year.

It turns out that if the first number is a valid day number
(1 to 31) it is used as the day. Otherwise it is used as a
two digit year.

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Test Case:
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create table test (dt date);
insert into test values('01-02-03');
insert into test values('33-04-05');
insert into test values('28-06-07');
select * from test;
dt
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01-02-2003
04-05-2033
06-28-2007

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Solution:
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