Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 5 11.  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)
 05/12/2021   18:32:46   (   0.00,-128.08) (  -0.66,-125.00)  350.38                80
 05/13/2021   06:54:11   (   0.01,-128.07) (  -0.42,-130.20)  241.31                80
 05/15/2021   06:39:21   (   0.00,-128.12) (   0.20,-127.24)  100.32                80
 05/15/2021   19:00:37   (  -0.01,-128.15) (   0.89,-132.40)  482.82                80
 05/17/2021   06:27:11   (   0.01,-128.17) (   0.83,-124.29)  441.29                80
 05/17/2021   18:48:27   (  -0.01,-128.20) (   0.26,-129.45)  141.78                80
 05/19/2021   18:38:57   (  -0.02,-128.24) (  -0.36,-126.49)  198.84                80
 05/20/2021   07:00:22   (   0.02,-128.24) (  -0.71,-131.69)  391.72                80
 05/22/2021   06:48:12   (   0.02,-128.28) (  -0.07,-128.73)   51.59                80
 05/24/2021   06:33:22   (   0.01,-128.31) (   0.56,-125.78)  288.06                80
 05/24/2021   18:54:38   (  -0.02,-128.33) (   0.53,-130.94)  296.99                80