Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 30.  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)
 01/30/2021   19:07:46   (   0.02,-137.25) (  -0.65,-134.23)  343.92                80
 01/31/2021   07:31:49   (  -0.03,-137.24) (  -0.47,-139.42)  247.41                80
 02/02/2021   07:16:58   (  -0.03,-137.25) (   0.14,-136.46)   89.57                80
 02/02/2021   19:38:13   (   0.03,-137.26) (   0.93,-141.63)  495.43                80
 02/04/2021   07:04:47   (  -0.02,-137.25) (   0.80,-133.52)  425.84                80
 02/04/2021   19:26:01   (   0.02,-137.26) (   0.32,-138.67)  159.38                80
 02/06/2021   19:16:29   (   0.02,-137.26) (  -0.29,-135.71)  175.87                80
 02/07/2021   07:37:54   (  -0.01,-137.24) (  -0.76,-140.91)  416.31                80
 02/09/2021   07:25:42   (   0.00,-137.23) (  -0.15,-137.95)   82.03                80
 02/11/2021   07:10:50   (   0.00,-137.21) (   0.47,-134.99)  252.26                80
 02/11/2021   19:32:06   (  -0.00,-137.22) (   0.60,-140.15)  333.59                80