Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 14.  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)
 06/14/2021   19:16:13   (   0.03,-137.19) (  -0.30,-135.74)  165.26                80
 06/15/2021   07:34:57   (  -0.02,-137.19) (  -0.83,-140.93)  425.29                80
 06/17/2021   07:22:46   (  -0.02,-137.18) (  -0.22,-137.97)   90.42                80
 06/19/2021   07:13:16   (  -0.02,-137.16) (   0.45,-135.02)  244.13                80
 06/19/2021   19:31:50   (   0.02,-137.16) (   0.69,-140.17)  342.92                80
 06/21/2021   19:19:41   (   0.02,-137.13) (   0.01,-137.22)    9.93                80
 06/23/2021   19:10:10   (   0.02,-137.10) (  -0.61,-134.26)  323.23                80
 06/24/2021   07:28:53   (  -0.02,-137.09) (  -0.52,-139.45)  268.05                80
 06/26/2021   07:19:22   (  -0.02,-137.05) (   0.11,-136.49)   63.57                80