Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/03/2019   10:49:58   (  -0.00,-137.19) (   0.90,-141.34)  472.28                80
 10/04/2019   10:33:52   (  -0.00,-137.19) (  -0.07,-136.81)   43.04                80
 10/06/2019   22:34:23   (   0.01,-137.15) (  -0.12,-137.58)   49.64                80
 10/07/2019   22:18:19   (   0.01,-137.14) (   0.92,-133.05)  465.37                80
 10/09/2019   10:37:26   (  -0.01,-137.13) (   0.27,-138.32)  136.82                80
 10/10/2019   10:21:22   (  -0.01,-137.11) (  -0.76,-133.80)  377.95                80
 10/11/2019   22:40:37   (   0.01,-137.08) (  -0.45,-139.10)  230.28                80
 10/12/2019   22:24:32   (   0.01,-137.06) (   0.58,-134.57)  284.27                80
 10/14/2019   10:43:40   (  -0.01,-137.05) (   0.61,-139.84)  318.71                80
 10/15/2019   10:27:34   (  -0.01,-137.02) (  -0.37,-135.30)  195.39                80