Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2019   22:34:20   (   0.00,-137.21) (  -0.07,-137.61)   44.99                80
 10/23/2019   22:18:14   (   0.00,-137.21) (   0.92,-133.07)  471.33                80
 10/25/2019   10:40:02   (  -0.00,-137.20) (   0.27,-138.34)  129.97                80
 10/26/2019   10:18:37   (  -0.00,-137.20) (  -0.78,-133.81)  386.05                80
 10/27/2019   22:40:32   (   0.00,-137.19) (  -0.44,-139.11)  219.14                80
 10/28/2019   22:24:28   (  -0.00,-137.19) (   0.61,-134.59)  296.62                80
 10/30/2019   10:46:15   (   0.00,-137.17) (   0.57,-139.86)  305.63                80
 10/31/2019   10:24:50   (   0.00,-137.16) (  -0.41,-135.32)  209.66                80
 11/01/2019   22:46:45   (   0.01,-137.14) (  -0.79,-140.62)  396.97                80
 11/02/2019   22:30:41   (   0.02,-137.13) (   0.25,-136.10)  117.74                80
 11/04/2019   10:52:28   (  -0.02,-137.11) (   0.92,-141.37)  485.37                80