I’m using Sketchup Make 2017 and noticed some weird behavior regarding the shadows.
I’ve set the Geolocation to Boulder, USA:
Then I set the Date & Time to 1/1/2021 to 7:27 AM.
If I activate shadows, no shadows are visible, because it’s night, if I increase the time by a minute, the shadows are shown.
So according to Sketchup, the sunrise time should be between 7:27 and 7:28 for January, 1st.
Sketchup::active_model.shadow_info["SunDirection"].z is negative at 7:27 AM and positive at 7:28 AM.
This differs from other services by about 5 minutes.
Every other service I tested says 7:23.
Also the sunset is postponed by the same time, so it’s not the difference between apparent sunrise/real sunrise.
Can somebody explain this difference?
Apparently I’m allowed to upload only one picture, so I combined the steps to reproduce here: