Database Encoding

i would like to make sure my template1 is encoded as
latin1.

1. how can i check the db encoding?  either a psql or
pgadmin method is fine.

2. how can i change it?

3. how can i change it in an existing database with
lots of tables (i can remove all data, if required).

i just went with the default when i set up the cygwin
version of pgsql - i'm not even sure what it is.

tia...

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