Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 29.  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)
 04/30/2021   07:25:08   (  -0.05,-137.18) (  -0.22,-137.96)   88.75                80
 05/02/2021   07:10:15   (  -0.04,-137.17) (   0.39,-135.00)  245.58                80
 05/02/2021   19:31:31   (   0.04,-137.18) (   0.66,-140.17)  339.73                80
 05/04/2021   19:19:18   (   0.03,-137.16) (   0.05,-137.21)    5.71                80
 05/06/2021   19:09:45   (   0.03,-137.14) (  -0.56,-134.25)  328.39                80
 05/07/2021   07:31:09   (  -0.03,-137.12) (  -0.53,-139.44)  264.19                80
 05/09/2021   07:16:16   (  -0.03,-137.10) (   0.09,-136.48)   69.55                80
 05/11/2021   07:04:03   (  -0.02,-137.07) (   0.71,-133.52)  402.65                80
 05/11/2021   19:25:19   (   0.02,-137.07) (   0.34,-138.69)  183.23                80