Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2019 6 21.  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)
 06/21/2019   07:16:42   (   0.01,-137.19) (   0.16,-136.50)   78.88                80
 06/23/2019   07:04:32   (   0.03,-137.19) (   0.83,-133.55)  414.40                80
 06/23/2019   19:25:47   (  -0.03,-137.20) (   0.31,-138.69)  170.81                80
 06/25/2019   19:16:17   (  -0.03,-137.19) (  -0.36,-135.75)  164.40                80
 06/26/2019   07:37:41   (   0.03,-137.18) (  -0.77,-140.93)  427.05                80
 06/27/2019   19:04:06   (  -0.03,-137.17) (  -0.97,-132.79)  499.06                80
 06/28/2019   07:25:30   (   0.03,-137.16) (  -0.15,-137.97)   92.62                80
 06/30/2019   07:10:39   (   0.03,-137.13) (   0.46,-135.01)  240.98                80
 06/30/2019   19:31:55   (  -0.03,-137.13) (   0.62,-140.17)  345.48                80
 07/02/2019   19:19:44   (  -0.03,-137.10) (   0.01,-137.21)   13.22                80
 07/04/2019   19:10:13   (  -0.04,-137.05) (  -0.61,-134.25)  318.30                80