Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2019 4 27.  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)
 04/27/2019   07:10:07   (   0.01,-137.18) (   0.47,-135.01)  246.74                80
 04/27/2019   19:31:22   (  -0.01,-137.22) (   0.64,-140.16)  335.28                80
 04/29/2019   19:21:50   (  -0.01,-137.22) (   0.00,-137.21)    1.35                80
 05/01/2019   19:09:38   (  -0.01,-137.21) (  -0.64,-134.25)  336.06                80
 05/02/2019   07:31:02   (   0.01,-137.17) (  -0.47,-139.45)  258.54                80
 05/04/2019   07:16:10   (   0.01,-137.16) (   0.17,-136.49)   76.04                80
 05/06/2019   07:03:57   (   0.00,-137.13) (   0.75,-133.53)  409.75                80
 05/06/2019   19:25:13   (   0.00,-137.16) (   0.30,-138.69)  173.81                80
 05/08/2019   19:15:40   (   0.01,-137.13) (  -0.28,-135.73)  158.84                80
 05/09/2019   07:37:03   (  -0.01,-137.09) (  -0.82,-140.92)  435.61                80
 05/10/2019   19:03:28   (   0.01,-137.08) (  -0.92,-132.77)  490.52                80