Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 6 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)
 06/06/2019   22:24:18   (   0.01,-137.19) (   0.60,-134.59)  295.79                80
 06/08/2019   10:46:06   (   0.01,-137.21) (   0.59,-139.86)  302.49                80
 06/09/2019   10:24:42   (   0.01,-137.20) (  -0.41,-135.33)  213.43                80
 06/10/2019   22:46:38   (  -0.02,-137.17) (  -0.81,-140.63)  394.75                80
 06/11/2019   22:30:34   (  -0.02,-137.16) (   0.19,-136.09)  121.08                80
 06/13/2019   10:52:23   (   0.01,-137.18) (   0.94,-141.38)  478.04                80
 06/14/2019   10:30:59   (   0.01,-137.17) (  -0.06,-136.84)   37.13                80
 06/16/2019   22:34:11   (  -0.00,-137.11) (  -0.09,-137.62)   57.69                80
 06/17/2019   22:18:07   (  -0.00,-137.10) (   0.91,-133.09)  457.30                80
 06/19/2019   10:37:15   (   0.00,-137.10) (   0.28,-138.36)  142.90                80
 06/20/2019   10:21:11   (   0.01,-137.08) (  -0.73,-133.82)  371.68                80