Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2019 4 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 04/11/2019   07:10:14   (   0.00,-137.19) (   0.47,-135.01)  248.40                80
 04/11/2019   19:31:29   (  -0.01,-137.22) (   0.64,-140.16)  334.22                80
 04/13/2019   19:21:57   (  -0.02,-137.22) (   0.01,-137.20)    2.71                80
 04/15/2019   19:09:45   (  -0.02,-137.20) (  -0.63,-134.25)  335.51                80
 04/16/2019   07:31:09   (   0.01,-137.17) (  -0.48,-139.44)  258.70                80
 04/18/2019   07:16:16   (  -0.02,-137.15) (   0.10,-136.47)   76.31                80
 04/20/2019   07:04:04   (  -0.01,-137.13) (   0.75,-133.52)  409.99                80
 04/20/2019   19:25:19   (   0.01,-137.15) (   0.37,-138.67)  173.88                80
 04/22/2019   19:15:47   (   0.00,-137.12) (  -0.28,-135.72)  159.17                80
 04/23/2019   07:37:10   (  -0.00,-137.09) (  -0.82,-140.91)  434.61                80
 04/24/2019   19:03:35   (  -0.01,-137.09) (  -0.93,-132.77)  491.66                80