Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 7 6.  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)
 07/07/2021   19:22:23   (   0.01,-137.18) (   0.00,-137.20)    2.64                80
 07/09/2021   19:10:12   (   0.02,-137.18) (  -0.64,-134.25)  334.59                80
 07/10/2021   07:28:56   (  -0.02,-137.18) (  -0.49,-139.43)  255.68                80
 07/12/2021   07:19:25   (  -0.02,-137.18) (   0.15,-136.48)   80.17                80
 07/14/2021   07:07:14   (  -0.01,-137.16) (   0.80,-133.52)  415.31                80
 07/14/2021   19:25:49   (   0.00,-137.16) (   0.33,-138.67)  171.55                80
 07/16/2021   19:16:18   (   0.00,-137.14) (  -0.32,-135.71)  163.12                80
 07/17/2021   07:35:02   (   0.00,-137.14) (  -0.80,-140.90)  427.55                80
 07/18/2021   19:04:06   (   0.01,-137.12) (  -0.91,-132.74)  497.25                80
 07/19/2021   07:22:50   (  -0.01,-137.11) (  -0.21,-137.93)   93.59                80