# Posted: 4 Dec 2005 15:45
Planet's Visibility by Rainer Lange
Education → Astronomy
presents a deceptively simple 3-color graph that tells, at-a-glance, when a planet (or moon, sun) is visible from your location. The vertical axis marks the months of the selected year, with the horizontal axis marking the 24 hours of the day (in local time). The three colors create a contour map effect and identify when the selected object is visible, not visible, or "eclipsed" by the sun....