Could it have something to do with the difference between the actual and the perceived sundown?
Perhaps the official times are taking the atmospheric refraction into consideration?


Xiste

No, those would be much earlier/later and would have a negative Elevation.

Civil twilight times for the ...

Hi,

I really like that Sweethome 3D provides a simulation of sunlight based on location and time.

However, I noticed that even though Ive set the correct timezone and latitude/longitude, the times for sunrise and sundown in SH3D differ from what they really are for that time and place. It's ...