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)    2.45                80
 07/09/2021   19:10:12   (   0.02,-137.19) (  -0.64,-134.24)  335.03                80
 07/10/2021   07:28:56   (  -0.02,-137.19) (  -0.49,-139.43)  255.21                80
 07/12/2021   07:19:25   (  -0.02,-137.18) (   0.15,-136.48)   80.85                80
 07/14/2021   07:07:13   (  -0.01,-137.17) (   0.74,-133.51)  416.23                80
 07/14/2021   19:25:49   (   0.01,-137.17) (   0.33,-138.67)  170.55                80
 07/16/2021   19:16:18   (   0.00,-137.15) (  -0.32,-135.71)  164.30                80
 07/17/2021   07:35:01   (  -0.00,-137.15) (  -0.80,-140.90)  426.33                80
 07/18/2021   19:04:06   (   0.01,-137.13) (  -0.91,-132.74)  498.61                80
 07/19/2021   07:22:50   (  -0.01,-137.13) (  -0.21,-137.93)   92.20                80