Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/16/2020   22:27:48   (  -0.03,-137.20) (   0.25,-136.04)  131.92                80
 08/18/2020   10:49:36   (   0.03,-137.19) (   0.92,-141.31)  469.54                80
 08/19/2020   10:33:32   (   0.01,-137.18) (  -0.07,-136.78)   46.02                80
 08/21/2020   22:34:05   (  -0.01,-137.18) (  -0.11,-137.55)   43.33                80
 08/22/2020   22:18:00   (  -0.01,-137.17) (   0.89,-133.02)  472.34                80
 08/24/2020   10:37:09   (   0.01,-137.15) (   0.29,-138.29)  130.30                80
 08/25/2020   10:21:05   (   0.01,-137.14) (  -0.77,-133.77)  384.75                80
 08/26/2020   22:40:21   (   0.00,-137.12) (  -0.46,-139.06)  222.01                80
 08/27/2020   22:24:18   (   0.01,-137.11) (   0.59,-134.54)  292.57                80
 08/29/2020   10:43:26   (  -0.00,-137.08) (   0.58,-139.81)  311.26                80