different result between 8.3 and 8.5 (to_timestamp function)

Hello

our customer reports different result of to_timestamp function between
8.3 and 8.4

It looks like to_timestamp returns some strange timezone value

postgres=# select to_timestamp('00:00:00','HH24:MI:SS');         to_timestamp
─────────────────────────────────0001-01-01 00:00:00+00:57:44 BC
(1 row)

postgres=# select to_timestamp('1.2.2009 20:10:10','DD.MM.YYYY HH24:MI:SS');     to_timestamp
────────────────────────2009-02-01 20:10:10+01
(1 row)

8.3 returns +01

it

we missing 2 minutes, 15 second

any explanation?

Regards
Pavel Stehule