Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 21.  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)
 04/21/2021   07:31:19   (  -0.05,-137.20) (  -0.55,-139.43)  254.70                80
 04/23/2021   07:16:27   (  -0.04,-137.20) (   0.10,-136.48)   81.45                80
 04/25/2021   07:04:15   (  -0.04,-137.20) (   0.76,-133.53)  417.16                80
 04/25/2021   19:25:30   (   0.04,-137.20) (   0.35,-138.69)  169.11                80
 04/27/2021   19:15:57   (   0.04,-137.19) (  -0.24,-135.72)  165.73                80
 04/28/2021   07:37:20   (  -0.04,-137.18) (  -0.85,-140.92)  425.48                80
 04/29/2021   19:03:45   (   0.04,-137.17) (  -0.91,-132.77)  499.52                80
 04/30/2021   07:25:08   (  -0.03,-137.16) (  -0.19,-137.97)   91.91                80
 05/02/2021   07:10:16   (  -0.03,-137.13) (   0.42,-135.01)  240.98                80
 05/02/2021   19:31:30   (   0.02,-137.12) (   0.70,-140.16)  346.16                80
 05/04/2021   19:19:18   (   0.02,-137.09) (   0.03,-137.21)   13.68                80