Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 8.  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)
 04/09/2021   07:04:22   (  -0.04,-137.20) (   0.73,-133.52)  418.29                80
 04/09/2021   19:25:38   (   0.04,-137.21) (   0.32,-138.68)  166.76                80
 04/11/2021   19:16:05   (   0.04,-137.20) (  -0.25,-135.72)  168.29                80
 04/12/2021   07:37:29   (  -0.04,-137.18) (  -0.86,-140.91)  424.11                80
 04/14/2021   07:25:17   (  -0.04,-137.17) (  -0.23,-137.96)   89.91                80
 04/16/2021   07:10:25   (  -0.04,-137.14) (   0.41,-135.00)  243.49                80
 04/16/2021   19:31:39   (   0.04,-137.15) (   0.70,-140.16)  342.22                80
 04/18/2021   19:19:28   (   0.03,-137.12) (   0.06,-137.20)   10.03                80
 04/20/2021   19:09:56   (   0.02,-137.08) (  -0.58,-134.25)  321.65                80
 04/21/2021   07:28:39   (  -0.02,-137.05) (  -0.52,-139.44)  271.51                80