Understanding blind-controllers sun position azimut settings

[martinjuhasz]

Describe the Problem I'm trying to setup the blind-controller node with its summer setting to limit direct sun light. I'm at the position where i have to enter

sun position settings start The azimuth (in degree) of the sun, when the sun start falls into the window. end The azimuth (in degree) of the sun, when the sun no longer falls into the window.

The problem i see here is that the azimuth of the sun is quite different depending at the time of the year. In May it may be totally another degree than in oktober. I guess this will not change automatically throuought the year as there is no option for this. My precise question is: what am i expected to input here? Some middle value? Or is it not even that important to be too precise here?

Screenshots Some Screenshot from dusk to dawn in april vs oktober on a sample location:

[martinjuhasz]

ok, i think i got the logic behind this. it is purely about the angle of the window, not about the sun position at all. it doesnt matter if the sun only starts rising/settle inside my view of the window or not. the potential angle at which light could travel into the windows counts. everything else is done by the node.

can someone confirm this?

[Hypnos3]

Yes,this is only about the window.

The azimuth is not changing over the year. What is changing is the elevation, so that maybe the sun is below the horizon in winter, where it is above the horizon in summer for the same azimuth.

The node will not go into sun-control if the sun is below the horizon and due to this will not fall into the window, even when the sun has reached the azimuth.

[martinjuhasz]

thank you. makes perfect sense. this might be closed.