Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2020   10:45:42   (   0.03,-137.22) (   0.58,-139.76)  289.36                80
 07/13/2020   10:24:18   (   0.02,-137.23) (  -0.41,-135.23)  228.11                80
 07/14/2020   22:46:15   (  -0.02,-137.25) (  -0.78,-140.53)  374.90                80
 07/15/2020   22:30:12   (  -0.02,-137.26) (   0.27,-136.01)  142.11                80
 07/17/2020   10:52:00   (   0.00,-137.27) (   0.93,-141.28)  457.83                80
 07/18/2020   10:30:37   (  -0.01,-137.27) (  -0.12,-136.76)   58.38                80
 07/20/2020   22:33:49   (   0.01,-137.27) (  -0.07,-137.53)   30.52                80
 07/21/2020   22:17:46   (   0.01,-137.27) (   0.97,-133.01)  485.65                80
 07/23/2020   10:39:34   (  -0.01,-137.26) (   0.22,-138.28)  115.57                80
 07/24/2020   10:18:10   (  -0.01,-137.26) (  -0.77,-133.74)  400.05                80