Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 20.  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)
 06/21/2021   19:19:40   (   0.02,-137.18) (   0.04,-137.21)    3.98                80
 06/23/2021   19:10:09   (   0.03,-137.16) (  -0.58,-134.25)  330.24                80
 06/24/2021   07:28:54   (  -0.02,-137.15) (  -0.49,-139.45)  261.37                80
 06/26/2021   07:19:23   (  -0.02,-137.12) (   0.13,-136.49)   71.87                80
 06/28/2021   07:07:12   (  -0.02,-137.09) (   0.75,-133.53)  404.76                80
 06/28/2021   19:25:47   (   0.02,-137.08) (   0.38,-138.68)  181.97                80
 06/30/2021   19:16:16   (   0.02,-137.05) (  -0.24,-135.72)  150.90                80
 07/01/2021   07:35:00   (  -0.02,-137.04) (  -0.82,-140.92)  440.72                80
 07/02/2021   19:04:05   (   0.02,-137.02) (  -0.87,-132.76)  483.45                80
 07/03/2021   07:25:30   (  -0.02,-137.00) (  -0.19,-137.96)  108.31                80