Day and night gradient

Quick answer：

A day and night gradient typically refers to a visual representation that shows a smooth transition between the bright daylight and the dark of night. This can be seen in various contexts, such as in photography, art, or digital media, where a gradient is used to depict the changing light conditions from day to night. In photography, this might involve a filter or software adjustment to create a natural-looking transition between the two. In art, a gradient can represent the atmosphere and mood of a scene. In digital media, it can be a design element that adds depth and dimension to visuals.