DayHemisphere is a two-dimensional GeoGraphics primitive that represents the half of the Earth that is currently in daylight.
DayHemisphere[datespec]represents the daylight half of the Earth for the specified date.
Color the part of the Earth currently in daylight:
Show the illuminated part of the Earth on the summer solstice using red lines to denote the Arctic and Antarctic Circles:
Use a different projection:
NightHemisphere DayNightTerminator SunPosition DateObject GeoVisibleRegion GeoDisk