Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 5 19.  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)
 05/20/2021   19:19:26   (   0.04,-137.20) (   0.06,-137.21)    2.77                80
 05/22/2021   19:09:56   (   0.04,-137.19) (  -0.58,-134.26)  333.06                80
 05/23/2021   07:28:41   (  -0.04,-137.19) (  -0.50,-139.46)  257.82                80
 05/25/2021   07:19:10   (  -0.03,-137.17) (   0.08,-136.49)   76.52                80
 05/27/2021   07:07:00   (  -0.03,-137.15) (   0.72,-133.54)  409.70                80
 05/27/2021   19:25:36   (   0.03,-137.14) (   0.37,-138.70)  177.45                80
 05/29/2021   19:16:06   (   0.02,-137.11) (  -0.28,-135.75)  154.90                80
 05/30/2021   07:34:50   (  -0.02,-137.10) (  -0.85,-140.93)  436.46                80
 05/31/2021   19:03:56   (   0.01,-137.07) (  -0.92,-132.79)  487.02                80
 06/01/2021   07:25:20   (  -0.01,-137.06) (  -0.20,-137.98)  104.35                80