Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 6 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2019   22:40:23   (   0.02,-137.19) (  -0.39,-139.13)  220.62                80
 06/06/2019   22:24:18   (   0.02,-137.19) (   0.61,-134.60)  295.61                80
 06/08/2019   10:46:06   (  -0.01,-137.21) (   0.58,-139.86)  302.98                80
 06/09/2019   10:24:42   (   0.00,-137.20) (  -0.41,-135.33)  212.87                80
 06/10/2019   22:46:38   (  -0.00,-137.17) (  -0.80,-140.63)  395.33                80
 06/11/2019   22:30:35   (  -0.01,-137.16) (   0.25,-136.11)  120.42                80
 06/13/2019   10:52:23   (  -0.00,-137.17) (   0.94,-141.38)  478.93                80
 06/14/2019   10:30:59   (  -0.00,-137.16) (  -0.06,-136.84)   36.21                80
 06/16/2019   22:34:12   (   0.01,-137.11) (  -0.09,-137.62)   58.54                80
 06/17/2019   22:18:07   (   0.00,-137.09) (   0.91,-133.09)  456.36                80