Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/13/2019   10:30:44   (   0.01,-137.21) (  -0.08,-136.81)   45.93                80
 05/15/2019   22:33:57   (  -0.00,-137.18) (  -0.11,-137.58)   45.69                80
 05/16/2019   22:17:53   (  -0.01,-137.18) (   0.94,-133.06)  470.48                80
 05/18/2019   10:39:42   (   0.01,-137.20) (   0.26,-138.33)  127.91                80
 05/19/2019   10:18:17   (   0.01,-137.20) (  -0.74,-133.79)  387.51                80
 05/20/2019   22:40:15   (  -0.00,-137.15) (  -0.43,-139.10)  221.77                80
 05/21/2019   22:24:10   (  -0.00,-137.15) (   0.56,-134.57)  293.59                80
 05/23/2019   10:45:59   (   0.00,-137.16) (   0.58,-139.85)  305.46                80
 05/24/2019   10:24:35   (  -0.00,-137.15) (  -0.41,-135.31)  209.28                80
 05/25/2019   22:46:31   (   0.00,-137.10) (  -0.81,-140.61)  401.39                80
 05/26/2019   22:30:28   (   0.00,-137.08) (   0.24,-136.09)  113.46                80