Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 5 23.  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)
 05/24/2021   06:33:23   (   0.04,-128.33) (   0.60,-125.79)  289.43                80
 05/24/2021   18:54:38   (  -0.05,-128.35) (   0.48,-130.95)  294.28                80
 05/26/2021   18:45:08   (  -0.05,-128.39) (  -0.16,-127.99)   45.37                80
 05/28/2021   18:32:58   (  -0.05,-128.41) (  -0.80,-125.04)  384.09                80
 05/29/2021   06:54:22   (   0.06,-128.41) (  -0.33,-130.23)  206.67                80
 05/31/2021   06:39:32   (   0.06,-128.43) (   0.32,-127.27)  131.54                80
 05/31/2021   19:00:48   (  -0.07,-128.44) (   0.77,-132.43)  454.19                80
 06/02/2021   06:27:22   (   0.07,-128.45) (   0.97,-124.32)  469.88                80
 06/02/2021   18:48:38   (  -0.07,-128.46) (   0.12,-129.48)  115.63                80
 06/04/2021   18:39:07   (  -0.07,-128.48) (  -0.47,-126.52)  222.92                80
 06/05/2021   07:00:32   (   0.07,-128.49) (  -0.59,-131.72)  366.15                80