Setting postgresql default database locale

UPDATE pg_database SET datallowconn = TRUE WHERE datname = 'template0'; 
UPDATE pg_database SET datistemplate = FALSE WHERE datname = 'template1';
drop database template1;
CREATE DATABASE template1 ENCODING = 'utf8' TEMPLATE = template0 LC_CTYPE ='en_US.utf8' LC_COLLATE = 'en_US.utf8';
UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1'; 
UPDATE pg_database SET datallowconn = FALSE WHERE datname = 'template0';`