Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2019 4 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 04/22/2019   06:53:43   (   0.01,-137.17) (  -0.78,-140.63)  394.10                80
 04/23/2019   06:30:25   (   0.00,-137.17) (   0.36,-135.64)  174.67                80
 04/24/2019   18:49:16   (   0.00,-137.22) (   0.69,-140.20)  339.91                80
 04/25/2019   18:31:18   (   0.00,-137.21) (  -0.46,-135.21)  228.93                80
 04/27/2019   06:50:19   (  -0.01,-137.16) (  -0.57,-139.81)  301.07                80
 04/28/2019   06:26:59   (  -0.01,-137.15) (   0.52,-134.81)  267.09                80
 04/29/2019   18:45:52   (   0.01,-137.18) (   0.47,-139.37)  248.74                80
 04/30/2019   18:27:52   (   0.01,-137.18) (  -0.62,-134.37)  319.57                80
 05/02/2019   06:46:53   (  -0.01,-137.12) (  -0.41,-138.97)  210.87                80
 05/03/2019   06:23:34   (  -0.01,-137.10) (   0.68,-133.97)  356.67                80
 05/04/2019   18:42:26   (   0.01,-137.12) (   0.31,-138.54)  160.65                80