Set timezone utc.

lib/LasTres/Schema.pm

@@ -41,8 +41,19 @@ sub Schema ($class) {
         }
 
         # Undef is perfectly fine for username and password.
-        $schema =
-          $class->connect( $dsn, $user, $password, { auto_savepoint => 1 } );
+        $schema = $class->connect(
+            $dsn, $user,
+            $password,
+            {
+                auto_savepoint => 1,
+                Callbacks      => {
+                    connected => sub {
+                        shift->do('set timezone = UTC');
+                        return;
+                    }
+                }
+            }
+        );
     }
     return $schema;
 }