This page will show a text and the time with an UTC offset (the timezone), based on the URL parameters (no DST adjustment whatsoever). Weird timezones with minutes offset are supported.
For example you can see the time in Dili, Timor Leste (hit the back button or clear the url parameters to see this form).
Caveats: the panic browser does not like '.' in the url, so don't put any in the name of your timezone.