Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 26.  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)
 04/27/2021   19:15:57   (   0.05,-137.19) (  -0.24,-135.72)  166.74                80
 04/28/2021   07:37:20   (  -0.05,-137.18) (  -0.86,-140.92)  425.40                80
 04/30/2021   07:25:08   (  -0.04,-137.16) (  -0.19,-137.97)   91.69                80
 05/02/2021   07:10:16   (  -0.03,-137.13) (   0.42,-135.01)  241.40                80
 05/02/2021   19:31:30   (   0.03,-137.13) (   0.69,-140.16)  344.68                80
 05/04/2021   19:19:18   (   0.03,-137.10) (   0.02,-137.21)   12.23                80
 05/06/2021   19:09:45   (   0.02,-137.07) (  -0.59,-134.25)  320.93                80
 05/07/2021   07:31:09   (  -0.02,-137.05) (  -0.50,-139.45)  271.49                80
 05/09/2021   07:16:16   (  -0.02,-137.02) (   0.12,-136.49)   61.10                80