Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/26/2019   10:46:20   (  -0.02,-137.20) (   0.60,-139.88)  305.33                80
 07/27/2019   10:24:56   (  -0.02,-137.20) (  -0.41,-135.34)  210.48                80
 07/28/2019   22:46:53   (   0.03,-137.18) (  -0.75,-140.65)  396.03                80
 07/29/2019   22:30:49   (   0.03,-137.17) (   0.27,-136.12)  119.23                80
 07/31/2019   10:49:57   (  -0.04,-137.15) (   0.88,-141.40)  482.88                80
 08/01/2019   10:33:53   (  -0.04,-137.14) (  -0.13,-136.87)   32.04                80
 08/03/2019   22:34:24   (   0.04,-137.09) (  -0.07,-137.63)   61.39                80
 08/04/2019   22:18:20   (   0.04,-137.08) (   0.94,-133.10)  453.22                80
 08/06/2019   10:37:27   (  -0.04,-137.05) (   0.27,-138.36)  149.74                80
 08/07/2019   10:21:23   (  -0.04,-137.03) (  -0.75,-133.83)  364.50                80