Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/28/2020   10:51:58   (  -0.02,-137.21) (   0.91,-141.34)  471.64                80
 04/29/2020   10:30:34   (  -0.02,-137.21) (  -0.11,-136.81)   44.91                80
 05/01/2020   22:33:46   (   0.01,-137.20) (  -0.05,-137.59)   44.14                80
 05/02/2020   22:17:40   (   0.01,-137.19) (   0.92,-133.05)  472.11                80
 05/04/2020   10:39:28   (  -0.01,-137.19) (   0.27,-138.31)  128.27                80
 05/05/2020   10:18:03   (  -0.01,-137.18) (  -0.76,-133.78)  387.52                80
 05/06/2020   22:39:59   (   0.01,-137.17) (  -0.43,-139.09)  218.91                80
 05/07/2020   22:23:55   (   0.01,-137.16) (   0.60,-134.56)  296.50                80
 05/09/2020   10:45:42   (  -0.01,-137.14) (   0.59,-139.82)  305.04                80
 05/10/2020   10:24:18   (  -0.00,-137.13) (  -0.44,-135.29)  209.95                80