Seeing "day" and "night", I thought the site was taking the local time reported by browsers of all the visitors, and rendering a "pie graph" of the proportion o

Seeing "day" and "night", I thought the site was taking the local time reported by browsers of all the visitors, and rendering a "pie graph" of the proportion of visitors currently with daylight and visitors without daylight... Although I suppose with the planet's unequal distribution of population (and then the distribution of HN visitors), such a graph would have a correspondence with the time of day. Now I'm wondering if there is a visualization of time of day at Z vs number of world population in daylight (assuming good weather and no smog...)