Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 7 19.  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)
 07/19/2021   07:22:53   (   0.00,-137.21) (  -0.14,-137.95)   84.64                80
 07/21/2021   07:13:23   (  -0.01,-137.20) (   0.49,-135.00)  250.94                80
 07/21/2021   19:31:58   (   0.00,-137.20) (   0.65,-140.15)  334.94                80
 07/23/2021   19:22:28   (   0.01,-137.19) (   0.01,-137.19)    0.30                80
 07/25/2021   19:10:18   (   0.00,-137.18) (  -0.63,-134.24)  334.04                80
 07/26/2021   07:29:03   (   0.00,-137.17) (  -0.45,-139.44)  257.74                80
 07/28/2021   07:19:32   (   0.02,-137.15) (   0.13,-136.47)   76.32                80
 07/30/2021   07:07:22   (   0.02,-137.13) (   0.78,-133.52)  410.29                80
 07/30/2021   19:25:58   (  -0.02,-137.13) (   0.30,-138.68)  175.99                80
 08/01/2021   19:16:27   (  -0.01,-137.11) (  -0.28,-135.72)  157.47                80