Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 19.  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   (   0.03,-137.19) (   0.05,-137.21)    3.95                80
 06/23/2021   19:10:09   (   0.03,-137.17) (  -0.57,-134.25)  331.14                80
 06/24/2021   07:28:54   (  -0.02,-137.16) (  -0.50,-139.45)  260.25                80
 06/26/2021   07:19:23   (  -0.02,-137.13) (   0.12,-136.49)   73.35                80
 06/28/2021   07:07:12   (  -0.02,-137.11) (   0.75,-133.53)  406.67                80
 06/28/2021   19:25:47   (   0.02,-137.10) (   0.39,-138.68)  180.07                80
 06/30/2021   19:16:16   (   0.02,-137.07) (  -0.24,-135.72)  153.25                80
 07/01/2021   07:35:00   (  -0.02,-137.06) (  -0.82,-140.92)  438.19                80
 07/02/2021   19:04:05   (   0.02,-137.04) (  -0.87,-132.76)  486.19                80
 07/03/2021   07:22:49   (  -0.02,-137.03) (  -0.19,-137.96)  105.35                80