Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2019 6 30.  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)
 06/30/2019   07:10:39   (   0.01,-137.20) (   0.47,-135.01)  249.08                80
 06/30/2019   19:31:54   (  -0.00,-137.20) (   0.60,-140.17)  336.85                80
 07/02/2019   19:19:44   (  -0.01,-137.20) (  -0.01,-137.21)    1.78                80
 07/04/2019   19:10:13   (  -0.02,-137.18) (  -0.63,-134.25)  332.52                80
 07/05/2019   07:31:37   (   0.02,-137.17) (  -0.43,-139.45)  258.55                80
 07/07/2019   07:16:46   (   0.03,-137.15) (   0.19,-136.49)   75.11                80
 07/09/2019   07:04:35   (   0.04,-137.12) (   0.81,-133.53)  408.55                80
 07/09/2019   19:25:51   (  -0.04,-137.12) (   0.27,-138.69)  178.39                80
 07/11/2019   19:16:20   (  -0.04,-137.09) (  -0.35,-135.73)  154.69                80
 07/12/2019   07:37:44   (   0.03,-137.08) (  -0.77,-140.92)  436.24                80
 07/13/2019   19:04:09   (  -0.04,-137.05) (  -0.98,-132.77)  487.08                80