Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2020 12 18.  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)
 12/18/2020   07:05:00   (   0.02,-137.23) (   0.84,-133.54)  420.24                80
 12/18/2020   19:28:55   (  -0.02,-137.23) (   0.28,-138.69)  166.30                80
 12/20/2020   19:14:03   (  -0.02,-137.22) (  -0.32,-135.73)  169.61                80
 12/21/2020   07:38:07   (   0.01,-137.22) (  -0.79,-140.92)  420.51                80
 12/23/2020   07:25:56   (   0.01,-137.22) (  -0.12,-137.97)   85.09                80
 12/25/2020   07:11:04   (   0.02,-137.20) (   0.50,-135.01)  249.85                80
 12/25/2020   19:34:59   (  -0.02,-137.20) (   0.62,-140.16)  337.22                80
 12/27/2020   19:22:47   (  -0.02,-137.18) (   0.01,-137.20)    3.77                80
 12/29/2020   19:10:35   (  -0.01,-137.15) (  -0.62,-134.24)  330.01                80
 12/30/2020   07:29:19   (   0.01,-137.14) (  -0.49,-139.43)  260.83                80