At the end of the Satellite loop do you get the correct current time?
If so Windy shows the correct timestamp, but may not be very consistent with the timeline.
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Then concerning the cloud cover forecast, did you try other models than ECMWF? Like HRRR or NAM in your area, and ICON too.
However, HRRR and NAM have a maximum forecast lead time of no more than 3 days.