Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 23.  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)
 09/23/2021   07:12:17   (   0.04,-137.20) (   0.53,-135.01)  249.65                 7
 09/23/2021   19:32:18   (  -0.04,-137.20) (   0.60,-140.16)  336.34                80
 09/25/2021   19:20:07   (  -0.04,-137.20) (  -0.04,-137.20)    0.93                80
 09/27/2021   19:10:36   (  -0.04,-137.18) (  -0.69,-134.25)  333.80                80
 09/28/2021   07:32:00   (   0.04,-137.17) (  -0.43,-139.44)  257.48                80
 09/30/2021   07:17:08   (   0.03,-137.15) (   0.16,-136.47)   76.33                80
 10/02/2021   07:04:57   (   0.03,-137.12) (   0.82,-133.52)  409.55                80
 10/02/2021   19:26:12   (  -0.03,-137.11) (   0.31,-138.67)  177.26                80
 10/04/2021   19:16:40   (  -0.02,-137.08) (  -0.28,-135.70)  155.40                80
 10/05/2021   07:38:05   (   0.02,-137.06) (  -0.77,-140.90)  436.22                80
 10/06/2021   19:04:29   (  -0.02,-137.03) (  -0.94,-132.75)  487.37                80