Calendar->set_timezone() does not seem to apply to unix_time() at present. Is this intentional? The two operations below should IMO return the same number:

Pike v7.3 release 58 running Hilfe v3.5 (Incremental Pike Frontend)

Calendar.TimeRange t = Calendar.Second(); t->unix_time() + t->utc_offset();

(1) Result: 1036154266

t->set_timezone("UTC")->unix_time();

(2) Result: 1036157866