Heliosynchronous satellites enter a darkness region at high latitude in winter. They are most of the time programmed not the capture an image when the solar zenith angle becomes too large because the quality of the signal is then lower.
My question is : what is the maximum solar zenith angle for the acquisition of Landsat-8 images ? This would help me compute the maximum latitude covered in winter. I would like to compare with Sentinel-2, which I found is 84.5° max SZA.