Night passes only generate infrared bands, so visible band images are left over from the previous day pass. Pass times can be found in the margin of the image.
Our ground station is nestled in the foothills of a mountain range which make easterly passes less than 30 degrees less than desirable.
NOAA 19 is currently in a twilight orbit and visible images won't be valid until it processes into a full day and night orbit.
Data processing is done with the Terrenus HRPT and Coastwatch packages.