One contiguous span of the day in a single BandPhase, as produced by computeTimelineBands.
A representative CSS color for the band (used to paint the gradient scrubber track).
Band end, as a local solar minute-of-day in [0, 1440].
[0, 1440]
The lighting phase covering this span.
Band start, as a local solar minute-of-day in [0, 1440].
One contiguous span of the day in a single BandPhase, as produced by computeTimelineBands.