Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 8 5.  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)
 08/06/2021   07:13:31   (   0.00,-137.18) (   0.49,-135.01)  247.83                80
 08/06/2021   19:32:05   (  -0.01,-137.19) (   0.64,-140.15)  337.93                80
 08/08/2021   19:19:56   (  -0.02,-137.16) (  -0.02,-137.21)    4.70                80
 08/10/2021   19:10:25   (  -0.03,-137.14) (  -0.62,-134.24)  328.33                80
 08/11/2021   07:29:09   (   0.03,-137.12) (  -0.45,-139.44)  264.10                80
 08/13/2021   07:19:38   (   0.03,-137.08) (   0.15,-136.48)   68.43                80
 08/15/2021   07:07:27   (   0.02,-137.04) (   0.76,-133.52)  400.19                80
 08/15/2021   19:26:03   (  -0.02,-137.04) (   0.32,-138.68)  186.25                80
 08/17/2021   19:16:32   (  -0.01,-136.99) (  -0.29,-135.72)  144.51                80
 08/18/2021   07:37:56   (   0.00,-136.96) (  -0.83,-140.91)  448.32                80