Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 30.  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)
 09/30/2021   07:19:52   (   0.05,-137.19) (   0.22,-136.50)   79.65                80
 10/02/2021   07:07:42   (   0.04,-137.18) (   0.82,-133.54)  413.93                80
 10/02/2021   19:26:17   (  -0.04,-137.18) (   0.26,-138.70)  171.91                80
 10/04/2021   19:16:46   (  -0.04,-137.16) (  -0.34,-135.74)  161.85                80
 10/05/2021   07:38:10   (   0.04,-137.15) (  -0.78,-140.92)  430.22                80
 10/06/2021   19:04:35   (  -0.04,-137.14) (  -0.95,-132.78)  495.01                80
 10/07/2021   07:23:20   (   0.04,-137.12) (  -0.12,-137.98)   97.29                80
 10/09/2021   07:13:49   (   0.04,-137.08) (   0.50,-135.02)  234.90                80
 10/09/2021   19:32:24   (  -0.04,-137.08) (   0.64,-140.17)  351.65                80
 10/11/2021   19:20:13   (  -0.03,-137.03) (   0.03,-137.21)   20.81                80
 10/13/2021   19:10:42   (  -0.03,-136.98) (  -0.59,-134.25)  309.79                80