Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/24/2020   10:18:10   (   0.00,-137.20) (  -0.78,-133.74)  394.22                80
 07/25/2020   22:40:07   (  -0.00,-137.19) (  -0.41,-139.05)  210.75                80
 07/26/2020   22:24:03   (  -0.00,-137.19) (   0.58,-134.51)  305.53                80
 07/28/2020   10:45:51   (   0.01,-137.20) (   0.61,-139.78)  294.92                80
 07/29/2020   10:24:28   (   0.01,-137.19) (  -0.44,-135.26)  220.93                80
 07/30/2020   22:46:25   (  -0.01,-137.18) (  -0.74,-140.56)  385.34                80
 07/31/2020   22:30:20   (  -0.02,-137.17) (   0.25,-136.03)  130.14                80
 08/02/2020   10:49:29   (   0.02,-137.16) (   0.93,-141.30)  471.42                80
 08/03/2020   10:30:44   (   0.02,-137.15) (  -0.06,-136.76)   43.76                80
 08/05/2020   22:33:57   (  -0.02,-137.12) (  -0.13,-137.54)   48.27                80