Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 10 18.  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)
 10/18/2021   07:05:06   (   0.05,-137.20) (   0.83,-133.55)  414.96                80
 10/18/2021   19:26:20   (  -0.05,-137.20) (   0.30,-138.70)  171.24                80
 10/20/2021   19:16:49   (  -0.05,-137.19) (  -0.34,-135.74)  164.23                80
 10/21/2021   07:38:14   (   0.05,-137.19) (  -0.73,-140.94)  426.60                80
 10/22/2021   19:04:38   (  -0.05,-137.18) (  -0.98,-132.79)  499.00                80
 10/23/2021   07:26:02   (   0.04,-137.17) (  -0.15,-137.98)   92.02                80
 10/25/2021   07:11:11   (   0.04,-137.15) (   0.50,-135.02)  241.88                80
 10/25/2021   19:32:26   (  -0.04,-137.14) (   0.63,-140.17)  345.04                80
 10/27/2021   19:20:15   (  -0.03,-137.11) (  -0.02,-137.22)   12.10                80
 10/29/2021   19:10:43   (  -0.03,-137.07) (  -0.62,-134.25)  320.48                80
 10/30/2021   07:32:07   (   0.02,-137.06) (  -0.50,-139.44)  270.94                80