I made a clock with lights that shows the time and phase of the moon.

This shows its 10pm, and 10 days past a full moon (approaching new moon), and the current length of the daylight here in South England is about 10 hours.

It really does tell you all that, and updates through the year, self updates with daylight savings, and never needs the time setting manually.

Version 1 in 2013. This one in 2017.