Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/30/2020   22:33:45   (   0.02,-137.21) (  -0.07,-137.59)   43.74                80
 03/31/2020   22:17:40   (   0.02,-137.21) (   0.94,-133.06)  472.45                80
 04/02/2020   10:39:29   (  -0.02,-137.21) (   0.20,-138.34)  127.69                80
 04/03/2020   10:18:03   (  -0.01,-137.20) (  -0.75,-133.79)  388.02                80
 04/04/2020   22:40:00   (   0.01,-137.18) (  -0.45,-139.09)  218.88                80
 04/05/2020   22:23:55   (   0.00,-137.17) (   0.57,-134.56)  296.62                80
 04/07/2020   10:45:43   (  -0.00,-137.17) (   0.58,-139.84)  304.30                80
 04/08/2020   10:24:19   (  -0.01,-137.15) (  -0.44,-135.31)  210.66                80
 04/09/2020   22:46:15   (   0.01,-137.12) (  -0.76,-140.61)  397.65                80
 04/10/2020   22:30:11   (   0.01,-137.10) (   0.26,-136.08)  117.01                80
 04/12/2020   10:51:58   (  -0.01,-137.09) (   0.94,-141.35)  484.95                80
 04/13/2020   10:30:34   (  -0.01,-137.07) (  -0.08,-136.82)   29.22                80