Length of Days
The first graph shows how the number of hours from sunrise to sunset change on different locations. Data for two years is shown.
The second graph shows how much the the day-length changes, in hours, each day. (The first derivative of the above.)
Select which locations to show:
(Tip: Turn off all except Quito to see how little variation in day length there is at the equator)
Show custom location
You can add graph for a custom location by providing a latitude/longitude coordinate set below. You could use touch map to find the coordinates.