Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 7.  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)
 09/07/2021   07:13:41   (   0.04,-137.20) (   0.53,-135.01)  249.13                80
 09/07/2021   19:32:16   (  -0.04,-137.20) (   0.61,-140.16)  336.91                80
 09/09/2021   19:22:46   (  -0.04,-137.21) (  -0.07,-137.21)    2.90                80
 09/11/2021   19:10:35   (  -0.04,-137.20) (  -0.69,-134.26)  335.13                80
 09/12/2021   07:29:19   (   0.04,-137.19) (  -0.44,-139.44)  255.72                80
 09/14/2021   07:19:48   (   0.03,-137.18) (   0.19,-136.49)   78.74                80
 09/16/2021   07:07:37   (   0.03,-137.15) (   0.82,-133.53)  412.52                80
 09/16/2021   19:26:12   (  -0.03,-137.15) (   0.32,-138.68)  174.37                80
 09/18/2021   19:16:41   (  -0.02,-137.12) (  -0.31,-135.72)  159.27                80
 09/19/2021   07:38:04   (   0.02,-137.11) (  -0.80,-140.91)  431.78                80
 09/20/2021   19:04:30   (  -0.02,-137.10) (  -0.94,-132.76)  492.72                80