A clock. Complete new redesign inspired by the"modern clock" found on thingiverse.
But slightly bigger, for better visibility. 

20 cm x 22 cm x 8cm

uses a clock mechanism HD 1688 or similar found on amazon.

Prints best with a skirt to avoid warping. PLA is OK

Mine has a prusa orange outer box, made of PETG. (Pla works the same)
Base plate was made selecting no upper skin (0 layer) with internal filled of honeycomb at 7% that gives this special finish. 
Any colour at your convenience. 
For the letters, use filament change (in the part"cadran") at  layers 30 and layer 44. There is the Gcode file for this part only.
For me, black/white/black colours.

HD 1688 mechanism automatically adjusts time.
Enjoy