Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 5 18.  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)
 05/19/2021   18:38:58   (  -0.03,-128.25) (  -0.42,-126.50)  199.23                80
 05/20/2021   07:00:22   (   0.04,-128.25) (  -0.72,-131.68)  391.42                80
 05/22/2021   06:48:12   (   0.04,-128.29) (  -0.09,-128.73)   51.10                80
 05/24/2021   06:33:22   (   0.03,-128.32) (   0.55,-125.78)  288.91                80
 05/24/2021   18:54:38   (  -0.04,-128.34) (   0.54,-130.94)  295.89                80
 05/26/2021   18:45:08   (  -0.04,-128.37) (  -0.10,-127.98)   43.21                80
 05/28/2021   18:32:58   (  -0.04,-128.39) (  -0.75,-125.03)  381.48                80
 05/29/2021   06:54:22   (   0.05,-128.39) (  -0.32,-130.23)  208.49                80
 05/31/2021   06:39:31   (   0.05,-128.41) (   0.27,-127.26)  129.25                80
 05/31/2021   19:00:47   (  -0.06,-128.40) (   0.83,-132.42)  457.62                80