Any instant on the UTC calendar day to sample.
Longitude in degrees (also references the local solar time).
Latitude in degrees.
Number of evenly-spaced samples across the day; clamped to a minimum of 2. Default 49.
Samples ordered by min from 0 to 1440, suitable for buildArcPath.
Sample the sun's altitude/azimuth at evenly-spaced instants across one local day.