Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 4 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2019   10:30:34   (   0.00,-137.21) (  -0.07,-136.77)   48.78                80
 04/29/2019   22:33:48   (  -0.00,-137.19) (  -0.08,-137.56)   41.77                80
 04/30/2019   22:17:44   (  -0.00,-137.19) (   0.91,-133.02)  474.27                80
 05/02/2019   10:39:33   (   0.00,-137.20) (   0.23,-138.30)  125.76                80
 05/03/2019   10:18:09   (   0.00,-137.19) (  -0.76,-133.77)  389.48                80
 05/04/2019   22:40:06   (  -0.00,-137.16) (  -0.43,-139.08)  218.73                80
 05/05/2019   22:24:01   (  -0.00,-137.15) (   0.56,-134.54)  296.41                80
 05/07/2019   10:45:51   (  -0.00,-137.15) (   0.58,-139.82)  304.55                80
 05/08/2019   10:24:26   (  -0.01,-137.13) (  -0.40,-135.29)  209.44                80
 05/09/2019   22:46:24   (   0.01,-137.07) (  -0.78,-140.60)  401.41                80
 05/10/2019   22:30:19   (   0.02,-137.05) (   0.21,-136.06)  112.54                80