Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 6 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2021   18:39:13   (  -0.10,-128.41) (  -0.52,-126.52)  215.12                80
 06/21/2021   07:00:37   (   0.10,-128.41) (  -0.61,-131.70)  374.20                80
 06/23/2021   06:48:26   (   0.10,-128.39) (   0.01,-128.74)   41.08                80
 06/25/2021   06:33:35   (   0.11,-128.35) (   0.63,-125.78)  291.26                80
 06/25/2021   18:54:51   (  -0.10,-128.32) (   0.44,-130.94)  297.94                80
 06/27/2021   18:45:20   (  -0.11,-128.28) (  -0.18,-127.99)   34.24                80
 06/29/2021   18:33:09   (  -0.12,-128.25) (  -0.80,-125.03)  366.51                80
 06/30/2021   06:54:33   (   0.11,-128.27) (  -0.32,-130.21)  221.77                80
 07/02/2021   06:39:42   (   0.12,-128.23) (   0.31,-127.25)  110.29                80
 07/02/2021   19:00:58   (  -0.11,-128.18) (   0.76,-132.41)  480.47                80