Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 15.  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)
 09/16/2021   07:04:57   (   0.04,-137.20) (   0.81,-133.53)  417.97                80
 09/16/2021   19:26:12   (  -0.04,-137.20) (   0.27,-138.69)  168.85                80
 09/18/2021   19:16:41   (  -0.03,-137.20) (  -0.36,-135.73)  167.41                80
 09/19/2021   07:38:05   (   0.03,-137.20) (  -0.75,-140.92)  422.34                80
 09/21/2021   07:25:54   (   0.03,-137.20) (  -0.12,-137.96)   86.25                80
 09/23/2021   07:11:03   (   0.03,-137.20) (   0.52,-135.01)  249.48                80
 09/23/2021   19:32:18   (  -0.03,-137.19) (   0.62,-140.16)  337.71                80
 09/25/2021   19:20:07   (  -0.03,-137.18) (  -0.02,-137.20)    2.83                80
 09/27/2021   19:10:36   (  -0.03,-137.16) (  -0.66,-134.24)  331.43                80
 09/28/2021   07:32:00   (   0.03,-137.16) (  -0.45,-139.43)  258.80                80