Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 8.  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)
 09/09/2021   19:20:05   (  -0.04,-137.20) (  -0.04,-137.21)    0.56                80
 09/11/2021   19:10:34   (  -0.04,-137.20) (  -0.66,-134.25)  335.06                80
 09/12/2021   07:29:18   (   0.04,-137.19) (  -0.46,-139.44)  255.75                80
 09/14/2021   07:19:47   (   0.03,-137.18) (   0.16,-136.48)   78.73                80
 09/16/2021   07:07:36   (   0.03,-137.15) (   0.79,-133.52)  412.49                80
 09/16/2021   19:26:12   (  -0.03,-137.15) (   0.28,-138.68)  174.43                80
 09/18/2021   19:16:41   (  -0.02,-137.12) (  -0.35,-135.73)  159.22                80
 09/19/2021   07:38:05   (   0.02,-137.11) (  -0.76,-140.92)  431.81                80
 09/20/2021   19:04:29   (  -0.02,-137.10) (  -0.93,-132.76)  492.66                80
 09/21/2021   07:25:53   (   0.02,-137.09) (  -0.19,-137.95)   98.43                80