Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 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)
 06/19/2021   07:13:15   (  -0.02,-137.19) (   0.42,-135.01)  247.17                80
 06/19/2021   19:31:51   (   0.02,-137.19) (   0.65,-140.17)  339.23                80
 06/21/2021   19:19:40   (   0.02,-137.18) (   0.04,-137.21)    4.45                80
 06/23/2021   19:10:09   (   0.02,-137.15) (  -0.58,-134.25)  329.42                80
 06/24/2021   07:28:54   (  -0.02,-137.14) (  -0.48,-139.45)  261.87                80
 06/26/2021   07:19:23   (  -0.02,-137.11) (   0.14,-136.49)   71.15                80
 06/28/2021   07:04:32   (  -0.02,-137.08) (   0.76,-133.53)  403.78                80
 06/28/2021   19:25:47   (   0.02,-137.07) (   0.37,-138.68)  183.36                80
 06/30/2021   19:16:16   (   0.02,-137.04) (  -0.25,-135.72)  149.26                80
 07/01/2021   07:35:00   (  -0.02,-137.03) (  -0.87,-140.91)  442.03                80