Quick guide for creating Animations along a curved path in Sketch using Anima.
To create a curved path:
Group the element you want to curve (Example, the Sun or Moon), to one end of a rectangle as show in the image below
Then, in the Interactions Editor, rotate the Group from one state to the other
Adjust Transition timing
Adjust the width of the rectangle to change the curve
Hide rectangle once you are happy with the curved path created