Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/23/2020   10:39:34   (   0.01,-137.20) (   0.25,-138.27)  122.12                80
 07/24/2020   10:18:09   (   0.01,-137.20) (  -0.74,-133.73)  394.33                80
 07/25/2020   22:40:07   (  -0.01,-137.20) (  -0.45,-139.04)  210.56                80
 07/26/2020   22:24:03   (  -0.01,-137.20) (   0.60,-134.52)  305.63                80
 07/28/2020   10:45:51   (   0.01,-137.19) (   0.58,-139.79)  295.23                80
 07/29/2020   10:24:27   (   0.01,-137.19) (  -0.41,-135.25)  220.51                80
 07/30/2020   22:46:24   (  -0.02,-137.17) (  -0.78,-140.56)  385.60                80
 07/31/2020   22:30:20   (  -0.02,-137.17) (   0.22,-136.02)  129.77                80
 08/02/2020   10:49:28   (   0.02,-137.15) (   0.97,-141.29)  472.21                80
 08/03/2020   10:30:45   (   0.02,-137.14) (  -0.08,-136.77)   42.96                80