Design submitted by Logan from the USA.
Logan says: Space Engine is a subtle geometry for the 12-5-9 method of telling the time. I wanted to see how close to a traditional watch layout you could use with 12-5-9, to make it as easy to read as possible.
If you use the clock positions 1-9 for the single minutes, that leaves clock positions 10-12 unused. Add a position between 10 and 11 and a position between 11 and 12, and you now have five positions from 10-12 for the tens of minutes. So, minutes 0-59 can be read naturally from LCD segments at the normal clock positions plus just two more positions, and the different spacing from 10-12 makes those five positions stand out separately from 1-9 for high legibility. For the hours, add an inner ring of LCD segments at the 12 standard positions.
In Space Engine, the LCD segments are revealed through a steel dial with cutouts. For visibility, one LCD state would have a color highly contrasting with the dial, the other state would be a color similar to the dial. For example, IP black dial with cyan and black LCD.
To make this always-on display even easier to read at a glance, the hours are marked by a single LCD segment in the contrasting color state, while the minutes are marked by continuous arcs of all segments from 1 to the number of single minutes or 10 to the number of tens of minutes (or no segments for 0).
The display would be backlit by an LED in the center, hidden by the dial, perhaps allowing for more uniform lighting and a thinner bezel than an edge-lit design.