Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/07/2020   10:45:44   (  -0.02,-137.21) (   0.55,-139.84)  300.11                80
 04/08/2020   10:24:19   (  -0.02,-137.21) (  -0.46,-135.32)  216.61                80
 04/09/2020   22:46:16   (   0.02,-137.21) (  -0.74,-140.62)  388.30                80
 04/10/2020   22:30:11   (   0.02,-137.21) (   0.28,-136.09)  128.14                80
 04/12/2020   10:51:58   (  -0.02,-137.21) (   0.92,-141.35)  471.65                80
 04/13/2020   10:30:34   (  -0.02,-137.21) (  -0.09,-136.82)   44.32                80
 04/15/2020   22:33:46   (   0.01,-137.19) (  -0.09,-137.59)   45.96                80
 04/16/2020   22:17:41   (   0.01,-137.18) (   0.94,-133.06)  469.89                80
 04/18/2020   10:39:29   (  -0.01,-137.18) (   0.27,-138.32)  130.62                80
 04/19/2020   10:18:04   (  -0.01,-137.17) (  -0.75,-133.79)  384.88                80