Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 5 20.  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)
 05/20/2021   07:00:22   (   0.04,-128.25) (  -0.67,-131.69)  391.42                80
 05/22/2021   06:48:12   (   0.04,-128.29) (  -0.04,-128.74)   50.87                80
 05/24/2021   06:33:23   (   0.04,-128.33) (   0.60,-125.79)  289.25                80
 05/24/2021   18:54:38   (  -0.04,-128.34) (   0.49,-130.95)  295.20                80
 05/26/2021   18:45:07   (  -0.04,-128.37) (  -0.09,-127.98)   44.17                80
 05/28/2021   18:32:57   (  -0.04,-128.40) (  -0.74,-125.03)  382.52                80
 05/29/2021   06:54:22   (   0.05,-128.40) (  -0.33,-130.23)  207.69                80
 05/31/2021   06:39:32   (   0.06,-128.42) (   0.31,-127.27)  130.19                80
 05/31/2021   19:00:48   (  -0.06,-128.42) (   0.78,-132.43)  456.30                80
 06/02/2021   06:27:22   (   0.06,-128.43) (   0.96,-124.32)  468.20                80
 06/02/2021   18:48:37   (  -0.06,-128.44) (   0.19,-129.47)  118.09                80