Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 9.  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   07:05:31   (  -0.04,-137.20) (   0.73,-133.52)  418.36                11
 04/09/2021   19:25:38   (   0.04,-137.21) (   0.33,-138.68)  166.78                80
 04/11/2021   19:16:06   (   0.04,-137.20) (  -0.30,-135.73)  168.18                80
 04/12/2021   07:37:30   (  -0.04,-137.18) (  -0.80,-140.92)  424.17                80
 04/14/2021   07:25:17   (  -0.04,-137.17) (  -0.23,-137.95)   90.07                80
 04/16/2021   07:10:25   (  -0.04,-137.14) (   0.41,-135.00)  243.27                80
 04/16/2021   19:31:39   (   0.04,-137.15) (   0.70,-140.15)  342.54                80
 04/18/2021   19:19:27   (   0.03,-137.11) (   0.06,-137.20)   10.43                80
 04/20/2021   19:09:56   (   0.02,-137.07) (  -0.58,-134.25)  321.19                80
 04/21/2021   07:28:39   (  -0.02,-137.05) (  -0.52,-139.44)  271.93                80