Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 7 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)
 07/09/2021   19:10:12   (   0.02,-137.18) (  -0.61,-134.24)  334.54                80
 07/10/2021   07:28:55   (  -0.01,-137.18) (  -0.52,-139.43)  255.74                80
 07/12/2021   07:19:24   (  -0.01,-137.18) (   0.13,-136.47)   80.05                80
 07/14/2021   07:07:13   (  -0.01,-137.16) (   0.77,-133.51)  415.24                80
 07/14/2021   19:25:48   (   0.00,-137.16) (   0.35,-138.66)  171.66                80
 07/16/2021   19:16:17   (   0.00,-137.14) (  -0.30,-135.71)  163.04                80
 07/17/2021   07:35:01   (   0.00,-137.14) (  -0.83,-140.89)  427.65                80
 07/18/2021   19:04:06   (   0.01,-137.12) (  -0.95,-132.75)  497.11                80
 07/19/2021   07:22:50   (  -0.01,-137.11) (  -0.17,-137.94)   93.76                80
 07/21/2021   07:13:18   (  -0.02,-137.08) (   0.42,-134.97)  239.29                80
 07/21/2021   19:31:53   (   0.02,-137.06) (   0.70,-140.12)  348.23                80