I've always been fascinated by the daylight terminator - the line which divides day from night. Daylight is my attempt to explore this natural phenomenon - and embodies both the graphical beauty and the amazing mathematics which the terminator presents.

All versions of Daylight show a big, bright, and beautiful map of the illuminated Earth, and the sunlight terminator, with astronomical details and up to date clouds. For more details about particular versions, see the menu in the top right.