What is a sun path diagram?
A plan projection of the sky. The outer ring is the horizon, the centre is straight overhead, and each arc traces the sun through one day. Architects use it to judge orientation, where overshadowing will come from and which façades get low morning or evening sun.
Which dates are shown?
The June solstice (around 21 June), the March and September equinoxes, and the December solstice. North of the equator these are labelled summer, equinox and winter; south of it, summer and winter swap.
How accurate is it?
It uses a standard solar geometry approximation and shows solar time, so 12 h is solar noon, not clock noon; time zones and daylight saving can shift clock time by an hour or more. That is fine for concept design and site analysis boards. For daylight, shading or energy compliance, use a dedicated simulation tool.
Does it include shadows from surrounding buildings?
No. The 2D diagram shows the sun’s path and the direction of the noon shadow only. The 3D workspace in Max lets you move the sun through the day over the massing of the real site.
Is the sun path diagram free?
The sun path is part of Pro. The free version covers the figure–ground, street network, land use and green & water drawings, with a watermark.
Can I edit the diagram?
Yes. The SVG export is vector geometry you can restyle in Illustrator, Affinity or Inkscape. A vector PDF and a PNG are also available.