Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 10.  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)
 01/10/2021   07:10:58   (   0.01,-137.23) (   0.48,-134.99)  254.93                80
 01/10/2021   19:34:52   (  -0.01,-137.25) (   0.64,-140.14)  330.06                80
 01/12/2021   19:22:40   (  -0.02,-137.25) (  -0.01,-137.19)    7.37                80
 01/14/2021   19:10:29   (  -0.02,-137.25) (  -0.65,-134.23)  343.45                80
 01/15/2021   07:29:12   (   0.02,-137.24) (  -0.45,-139.42)  247.72                80
 01/17/2021   07:19:39   (  -0.02,-137.25) (   0.15,-136.46)   89.87                80
 01/17/2021   19:38:14   (   0.02,-137.26) (   0.97,-141.61)  495.37                80
 01/19/2021   07:04:47   (  -0.02,-137.24) (   0.80,-133.50)  426.27                80
 01/19/2021   19:26:02   (   0.02,-137.25) (   0.32,-138.65)  159.10                80
 01/21/2021   19:16:30   (   0.02,-137.25) (  -0.34,-135.70)  176.60                80
 01/22/2021   07:35:14   (  -0.00,-137.23) (  -0.75,-140.89)  415.35                80