Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 12 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/04/2019   22:27:45   (   0.00,-137.20) (   0.27,-136.08)  127.49                80
 12/06/2019   10:52:12   (   0.00,-137.20) (   0.93,-141.35)  472.19                80
 12/07/2019   10:30:46   (   0.00,-137.20) (  -0.07,-136.81)   43.98                80
 12/09/2019   22:36:37   (  -0.01,-137.18) (  -0.07,-137.59)   46.18                80
 12/10/2019   22:15:11   (  -0.01,-137.17) (   0.93,-133.05)  469.42                80
 12/12/2019   10:39:38   (   0.01,-137.16) (   0.27,-138.31)  131.93                80
 12/13/2019   10:18:12   (   0.01,-137.14) (  -0.73,-133.78)  382.89                80
 12/14/2019   22:42:48   (  -0.01,-137.11) (  -0.47,-139.08)  225.05                80
 12/15/2019   22:21:22   (  -0.01,-137.09) (   0.54,-134.54)  289.29                80
 12/17/2019   10:45:49   (   0.01,-137.06) (   0.60,-139.82)  313.54                80
 12/18/2019   10:24:24   (   0.01,-137.04) (  -0.40,-135.28)  200.49                80