Decimal Time is a designer watch face for "Wear OS by Google" smartwatches.

A Time Traveler from the Future lost his wrist watch here on Earth.
After days of intense scrutiny I figured out how to read this watch:

How to read decimal percent time:

0% is midnight 00:00 hours.
25% is 6 a.m. Good morning.
33.33% is 8 a.m, 08:00 hours.
50% is noon, 12:00 hours.
66.67% is 4 p.m., 16:00 hours.
75% is 6 p.m., 18:00 hours.
99.99% is before midnight again, 23:59 hours.

The unit, 1% of day, is called one centiday, that's 14.4 old minutes.

The last digit on the right is 8.64 old seconds.

The timer tick of the future is 1 decisecond, that's 864 old milliseconds.

The animated outer ring reminds us of the fact that Earth rotates
counter-clockwise when you look down on the North Pole from Orbit.

Settings for Background Color, Date On/Off and Gradient On/Off on Watch.
Tap Gear icon on watch for Settings.

Ambient Screen protects your OLED display from burn-in.

Additional Date info line contains battery level in %.