Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2020   22:30:13   (  -0.01,-137.20) (   0.25,-136.04)  132.61                80
 11/22/2020   10:49:19   (   0.01,-137.22) (   0.95,-141.30)  465.10                80
 11/23/2020   10:33:15   (   0.01,-137.23) (  -0.12,-136.78)   52.59                80
 11/25/2020   22:33:44   (  -0.01,-137.24) (  -0.07,-137.55)   34.19                80
 11/26/2020   22:17:39   (  -0.01,-137.25) (   0.94,-133.01)  483.10                80
 11/28/2020   10:36:45   (   0.01,-137.27) (   0.25,-138.27)  115.49                80
 11/29/2020   10:20:40   (   0.01,-137.27) (  -0.75,-133.74)  401.36                80
 11/30/2020   22:39:55   (  -0.01,-137.25) (  -0.43,-139.04)  204.27                80
 12/01/2020   22:23:50   (  -0.01,-137.25) (   0.58,-134.51)  312.00                80
 12/03/2020   10:42:57   (   0.01,-137.25) (   0.55,-139.78)  288.23                80