Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 22.  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   07:11:03   (   0.04,-137.20) (   0.52,-135.01)  249.57                80
 09/23/2021   19:32:18   (  -0.04,-137.20) (   0.62,-140.16)  336.57                80
 09/25/2021   19:20:07   (  -0.04,-137.19) (  -0.03,-137.20)    1.88                80
 09/27/2021   19:10:36   (  -0.04,-137.18) (  -0.67,-134.25)  333.37                80
 09/28/2021   07:32:00   (   0.04,-137.17) (  -0.44,-139.44)  257.79                80
 09/30/2021   07:17:08   (   0.03,-137.14) (   0.15,-136.47)   75.96                80
 10/02/2021   07:04:57   (   0.03,-137.11) (   0.80,-133.52)  409.02                80
 10/02/2021   19:26:12   (  -0.02,-137.10) (   0.33,-138.66)  177.97                80
 10/04/2021   19:16:41   (  -0.02,-137.07) (  -0.33,-135.71)  154.58                80
 10/05/2021   07:38:05   (   0.02,-137.06) (  -0.78,-140.90)  436.89                80