Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 7 13.  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)
 07/14/2021   07:07:13   (  -0.00,-137.16) (   0.77,-133.51)  415.12                80
 07/14/2021   19:25:49   (  -0.00,-137.16) (   0.29,-138.67)  171.76                80
 07/16/2021   19:16:17   (  -0.00,-137.14) (  -0.30,-135.71)  163.01                80
 07/17/2021   07:35:02   (   0.01,-137.14) (  -0.77,-140.91)  427.70                80
 07/18/2021   19:04:06   (   0.00,-137.12) (  -0.95,-132.75)  497.10                80
 07/19/2021   07:22:50   (  -0.00,-137.11) (  -0.18,-137.94)   93.79                80
 07/21/2021   07:13:18   (  -0.01,-137.08) (   0.42,-134.97)  239.29                80
 07/21/2021   19:31:54   (   0.02,-137.07) (   0.64,-140.13)  348.20                80
 07/23/2021   19:19:42   (   0.02,-137.02) (   0.05,-137.17)   16.08                80
 07/25/2021   19:10:11   (   0.01,-136.98) (  -0.61,-134.21)  315.49                80
 07/26/2021   07:31:35   (  -0.01,-136.97) (  -0.51,-139.40)  275.75                80