Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/29/2020   22:27:22   (  -0.02,-137.19) (   0.26,-135.98)  138.06                80
 07/01/2020   10:51:50   (   0.02,-137.20) (   0.95,-141.25)  462.07                80
 07/02/2020   10:30:27   (   0.01,-137.20) (  -0.10,-136.73)   53.82                80
 07/04/2020   22:33:40   (   0.01,-137.19) (  -0.05,-137.51)   36.57                80
 07/05/2020   22:17:36   (   0.01,-137.18) (   0.94,-132.98)  479.07                80
 07/07/2020   10:39:25   (  -0.01,-137.18) (   0.21,-138.26)  122.13                80
 07/08/2020   10:18:01   (  -0.01,-137.17) (  -0.78,-133.72)  393.39                80
 07/09/2020   22:39:58   (   0.01,-137.16) (  -0.40,-139.03)  213.03                80
 07/10/2020   22:23:54   (   0.01,-137.15) (   0.58,-134.49)  302.38                80
 07/12/2020   10:45:43   (  -0.01,-137.14) (   0.56,-139.77)  299.26                80