The app does have the timezone feature however if a valid location is entered its hidden (since the location will resolve if dst is in use). To expose it right now, you can empty location and use “lookup” to cause an invalid lookup.
If the web interface gets accessed very rapidly it may incur a small period where the web interface isn’t as responsive however you can power cycle or wait a few minutes.
The NTP IP is a public NTP server that we use to poll the time. We then adjust it using DST from the lookup based on location.