Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 5 12.  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) (  -0.65,-125.00)  350.30                80
 05/13/2021   06:54:11   (   0.01,-128.07) (  -0.43,-130.20)  241.33                80
 05/15/2021   06:39:21   (   0.01,-128.12) (   0.20,-127.24)  100.26                80
 05/15/2021   19:00:37   (  -0.01,-128.15) (   0.89,-132.40)  482.93                80
 05/17/2021   06:27:11   (   0.01,-128.17) (   0.83,-124.29)  441.21                80
 05/17/2021   18:48:27   (  -0.02,-128.20) (   0.27,-129.44)  141.92                80
 05/19/2021   18:38:57   (  -0.02,-128.24) (  -0.36,-126.49)  198.70                80
 05/20/2021   07:00:22   (   0.03,-128.24) (  -0.71,-131.69)  391.84                80
 05/22/2021   06:48:12   (   0.02,-128.28) (  -0.08,-128.73)   51.71                80
 05/24/2021   06:33:22   (   0.02,-128.31) (   0.56,-125.78)  287.92                80
 05/24/2021   18:54:38   (  -0.02,-128.32) (   0.53,-130.94)  297.17                80