The outer ring
All 27 nakshatras
The real sidereal ecliptic, turned so the Sun sits in its true nakshatra — and the Moon then finds its own.

The Muhurat Dial
The outer ring
The real sidereal ecliptic, turned so the Sun sits in its true nakshatra — and the Moon then finds its own.
The rim
24 hours, not 12. The hands keep your city’s time, wherever you happen to be.
The arc
The dark sweep is the true night where you are, divided into its four praharas.
The bands
Rahu Kalam, Abhijit, Brahma and the rest — drawn where they fall, so the day has a shape.
The centre
Earth at the middle, the Moon set by its real elongation. The geometry of that moment.
And it moves
It travels through your day at its true phase, rather than jumping once every 24 hours.