Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 7 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)
 07/09/2021   19:10:12   (   0.02,-137.18) (  -0.61,-134.24)  334.34                80
 07/10/2021   07:28:55   (  -0.01,-137.18) (  -0.51,-139.43)  255.94                80
 07/12/2021   07:19:24   (  -0.01,-137.17) (   0.13,-136.47)   79.68                80
 07/14/2021   07:07:14   (  -0.01,-137.16) (   0.78,-133.51)  414.73                80
 07/14/2021   19:25:48   (   0.00,-137.15) (   0.35,-138.66)  172.23                80
 07/16/2021   19:16:17   (  -0.00,-137.14) (  -0.30,-135.71)  162.33                80
 07/17/2021   07:35:01   (   0.00,-137.13) (  -0.82,-140.89)  428.37                80
 07/18/2021   19:04:06   (   0.01,-137.11) (  -0.95,-132.75)  496.25                80
 07/19/2021   07:22:50   (  -0.00,-137.10) (  -0.17,-137.94)   94.64                80
 07/21/2021   07:13:18   (  -0.02,-137.07) (   0.43,-134.97)  238.30                80
 07/21/2021   19:31:53   (   0.02,-137.06) (   0.70,-140.12)  349.27                80