Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/11/2019   22:43:17   (  -0.01,-137.20) (  -0.42,-139.10)  216.81                80
 10/12/2019   22:24:32   (  -0.00,-137.19) (   0.55,-134.56)  299.19                80
 10/14/2019   10:46:20   (   0.00,-137.19) (   0.58,-139.85)  301.85                80
 10/15/2019   10:24:55   (   0.00,-137.19) (  -0.40,-135.31)  213.69                80
 10/16/2019   22:46:51   (  -0.00,-137.17) (  -0.76,-140.62)  393.18                80
 10/17/2019   22:30:46   (  -0.00,-137.15) (   0.22,-136.08)  121.83                80
 10/19/2019   10:49:53   (   0.00,-137.14) (   0.97,-141.35)  480.86                80
 10/20/2019   10:33:48   (   0.00,-137.12) (  -0.07,-136.83)   33.54                80
 10/22/2019   22:34:19   (  -0.00,-137.06) (  -0.10,-137.60)   61.07                80
 10/23/2019   22:18:14   (  -0.00,-137.04) (   0.88,-133.06)  452.89                80