Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 11 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/30/2020   22:39:55   (  -0.00,-137.23) (  -0.44,-139.04)  206.52                80
 12/01/2020   22:23:49   (  -0.01,-137.23) (   0.57,-134.50)  309.72                80
 12/03/2020   10:42:57   (   0.01,-137.22) (   0.55,-139.78)  291.22                80
 12/04/2020   10:26:51   (   0.01,-137.21) (  -0.46,-135.25)  224.42                80
 12/05/2020   22:46:07   (  -0.00,-137.19) (  -0.73,-140.55)  382.50                80
 12/06/2020   22:30:01   (  -0.01,-137.17) (   0.28,-136.01)  132.84                80
 12/08/2020   10:49:07   (   0.00,-137.16) (   0.90,-141.28)  469.07                80
 12/09/2020   10:33:02   (   0.00,-137.14) (  -0.11,-136.75)   45.94                80
 12/11/2020   22:33:31   (  -0.00,-137.09) (  -0.12,-137.50)   47.56                80
 12/12/2020   22:17:25   (  -0.01,-137.07) (   0.89,-132.97)  466.85                80