Nightingale - angle between Sun and Moon?

Know somebody how I can calculate the angle between the Sun and the Moon using the Nightingale components? I opened the Nightingale Example.gh example that comes with the zip file of the components but can’t figure a way by myself how to do this.

Nightingale Example.gh (22.5 KB)

you have 2 circles, deconstruct them and use the 2 centers .