Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/26/2020   22:43:01   (  -0.05,-137.19) (  -0.49,-139.05)  212.84                80
 08/27/2020   22:21:37   (  -0.04,-137.19) (   0.56,-134.53)  303.74                80
 08/29/2020   10:46:06   (   0.04,-137.21) (   0.61,-139.80)  295.75                80
 08/30/2020   10:24:41   (   0.04,-137.21) (  -0.39,-135.27)  220.56                80
 08/31/2020   22:46:38   (  -0.02,-137.20) (  -0.78,-140.58)  385.21                80
 09/01/2020   22:30:34   (  -0.02,-137.20) (   0.22,-136.05)  131.02                80
 09/03/2020   10:49:42   (   0.01,-137.20) (   0.95,-141.32)  468.89                80
 09/04/2020   10:33:38   (   0.02,-137.20) (  -0.05,-136.78)   47.32                80
 09/06/2020   22:34:11   (  -0.02,-137.18) (  -0.11,-137.56)   43.12                80
 09/07/2020   22:18:06   (  -0.02,-137.18) (   0.90,-133.03)  472.48                80
 09/09/2020   10:37:14   (   0.01,-137.17) (   0.28,-138.30)  128.87                80