Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 9 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2019   22:34:27   (   0.02,-137.20) (  -0.07,-137.61)   46.74                80
 09/05/2019   22:18:23   (   0.02,-137.19) (   0.95,-133.08)  469.26                80
 09/07/2019   10:40:10   (  -0.02,-137.19) (   0.25,-138.34)  131.51                80
 09/08/2019   10:18:46   (  -0.02,-137.18) (  -0.77,-133.81)  384.15                80
 09/09/2019   22:40:42   (   0.02,-137.16) (  -0.42,-139.11)  222.16                80
 09/10/2019   22:24:37   (   0.02,-137.15) (   0.60,-134.58)  293.30                80
 09/12/2019   10:46:25   (  -0.02,-137.14) (   0.60,-139.84)  308.18                80
 09/13/2019   10:27:40   (  -0.02,-137.13) (  -0.42,-135.31)  207.09                80
 09/14/2019   22:46:56   (   0.02,-137.10) (  -0.76,-140.61)  399.84                80
 09/15/2019   22:30:52   (   0.02,-137.09) (   0.27,-136.08)  115.19                80