Emerald Vienna

Emerald Vienna is a 24-hour analog watch face. The hour dial is marked with 24 hours instead of the usual 12 and the hour hand makes just one revolution per day. The minute hand makes one revolution per hour as usual.

Noon is on the top by default, but this may be changed to midnight using the configuration panel. To access it, long press on the center of the face, or tap the gear icon underneath the face when in the face-chooser panel.

Unlike traditional 24-hour watches, Vienna's black and white ring shows the actual daylight hours for this locale. And the gray zone indicates the nighttime hours when the Moon is up.

The small green hand shows the UTC time.

In ambient mode, the same information is displayed, with different colors to save energy.

No network access is required; only the device time and location are used.

More information is available at the listed website.