Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 25.  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)
 09/25/2021   19:20:09   (  -0.05,-137.22) (  -0.04,-137.21)    1.41                80
 09/27/2021   19:10:39   (  -0.04,-137.22) (  -0.69,-134.26)  336.75                80
 09/28/2021   07:29:22   (   0.04,-137.21) (  -0.44,-139.45)  254.31                80
 09/30/2021   07:18:23   (   0.04,-137.20) (   0.20,-136.50)   80.73                 9
 10/02/2021   07:05:01   (   0.03,-137.19) (   0.79,-133.53)  415.11                80
 10/02/2021   19:26:17   (  -0.03,-137.19) (   0.30,-138.69)  171.30                80
 10/04/2021   19:16:47   (  -0.03,-137.17) (  -0.35,-135.74)  162.50                80
 10/05/2021   07:38:11   (   0.03,-137.16) (  -0.78,-140.93)  428.91                80
 10/06/2021   19:04:36   (  -0.03,-137.14) (  -0.94,-132.78)  495.65                80
 10/07/2021   07:26:01   (   0.03,-137.13) (  -0.13,-137.98)   95.99                80