Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 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)
 01/14/2021   19:07:48   (   0.01,-137.25) (  -0.63,-134.23)  343.18                80
 01/15/2021   07:31:52   (  -0.01,-137.24) (  -0.47,-139.42)  248.16                80
 01/17/2021   07:17:00   (  -0.01,-137.23) (   0.18,-136.46)   87.85                80
 01/17/2021   19:40:55   (   0.01,-137.24) (   0.93,-141.62)  497.64                80
 01/19/2021   07:04:47   (  -0.01,-137.22) (   0.78,-133.50)  423.50                80
 01/19/2021   19:28:42   (   0.01,-137.23) (   0.34,-138.65)  162.07                80
 01/21/2021   19:13:50   (   0.01,-137.22) (  -0.32,-135.70)  173.04                80
 01/22/2021   07:37:54   (  -0.01,-137.20) (  -0.77,-140.89)  418.61                80
 01/24/2021   07:25:41   (  -0.02,-137.18) (  -0.17,-137.92)   84.46                80
 01/26/2021   07:10:48   (  -0.02,-137.15) (   0.43,-134.96)  248.85                80
 01/26/2021   19:34:44   (   0.02,-137.15) (   0.62,-140.12)  337.43                80