Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2020   10:51:50   (   0.02,-137.20) (   0.94,-141.25)  461.95                80
 07/02/2020   10:30:27   (   0.01,-137.20) (  -0.10,-136.73)   54.01                80
 07/04/2020   22:33:40   (   0.00,-137.19) (  -0.04,-137.51)   36.22                80
 07/05/2020   22:14:56   (   0.01,-137.19) (   0.95,-132.98)  479.52                80
 07/07/2020   10:39:25   (  -0.01,-137.18) (   0.20,-138.26)  121.75                80
 07/08/2020   10:18:01   (  -0.01,-137.18) (  -0.79,-133.72)  393.80                80
 07/09/2020   22:39:58   (   0.01,-137.16) (  -0.40,-139.03)  212.43                80
 07/10/2020   22:23:54   (   0.01,-137.16) (   0.59,-134.49)  303.05                80
 07/12/2020   10:45:43   (  -0.01,-137.15) (   0.56,-139.77)  298.55                80
 07/13/2020   10:24:18   (  -0.01,-137.14) (  -0.43,-135.24)  216.53                80