Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 9.  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,-137.25) (   0.47,-134.99)  256.21                80
 01/10/2021   19:34:53   (  -0.01,-137.27) (   0.58,-140.15)  327.54                80
 01/12/2021   19:20:01   (  -0.02,-137.30) (  -0.06,-137.20)   12.08                80
 01/14/2021   19:10:28   (  -0.02,-137.33) (  -0.65,-134.23)  351.42                80
 01/15/2021   07:31:52   (   0.02,-137.32) (  -0.45,-139.42)  239.67                80
 01/17/2021   07:19:40   (  -0.01,-137.34) (   0.20,-136.47)  100.36                80
 01/17/2021   19:38:15   (   0.02,-137.37) (   0.92,-141.62)  483.57                80
 01/19/2021   07:04:47   (  -0.02,-137.37) (   0.80,-133.50)  439.62                80
 01/19/2021   19:26:03   (   0.02,-137.39) (   0.26,-138.66)  144.56                80
 01/21/2021   19:16:30   (  -0.00,-137.40) (  -0.33,-135.70)  193.37                80
 01/22/2021   07:37:54   (   0.01,-137.39) (  -0.76,-140.89)  398.22                80