Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 9 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)
 09/26/2019   22:21:56   (   0.02,-137.20) (   0.60,-134.55)  301.48                80
 09/28/2019   10:46:24   (  -0.02,-137.20) (   0.54,-139.82)  298.22                80
 09/29/2019   10:24:59   (  -0.02,-137.20) (  -0.43,-135.28)  218.50                80
 09/30/2019   22:49:35   (   0.01,-137.20) (  -0.74,-140.59)  385.56                80
 10/01/2019   22:28:10   (  -0.01,-137.20) (   0.23,-136.04)  131.35                80
 10/03/2019   10:52:38   (   0.02,-137.20) (   0.92,-141.32)  469.24                80
 10/04/2019   10:31:13   (   0.01,-137.19) (  -0.06,-136.78)   46.67                80
 10/06/2019   22:37:04   (  -0.01,-137.17) (  -0.08,-137.55)   43.42                80
 10/07/2019   22:15:39   (  -0.01,-137.16) (   0.89,-133.01)  472.14                80
 10/09/2019   10:40:07   (   0.01,-137.14) (   0.25,-138.28)  129.48                80
 10/10/2019   10:18:42   (   0.01,-137.13) (  -0.72,-133.74)  385.89                80