setting timezone

We are moving a number of databases to new hardware.  Some of these
machines have the timezone set in the database differently then the
actual location of the machine as they are access from a different
timezone.  We were surprised to note that when we dump the database and
reloaded it on the new machine, it did not retain the timezone setting.

Is there a way to retain this information from the original database
when reloading?

Thanks.

--
Until later, Geoffrey

"I predict future happiness for America if they can prevent
the government from wasting the labors of the people under
the pretense of taking care of them."
- Thomas Jefferson