Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 10.  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)
 08/10/2021   06:48:38   (   0.00,-128.13) (  -0.14,-128.69)   64.38                80
 08/12/2021   06:33:49   (   0.02,-128.17) (   0.53,-125.74)  275.46                80
 08/12/2021   18:57:43   (   0.01,-128.09) (   0.61,-130.89)  318.03                80
 08/14/2021   18:42:53   (   0.01,-128.13) (  -0.06,-127.94)   21.47                80
 08/16/2021   18:30:42   (   0.00,-128.15) (  -0.67,-124.98)  359.89                80
 08/17/2021   06:54:46   (  -0.04,-128.24) (  -0.46,-130.17)  219.98                80
 08/19/2021   06:39:56   (  -0.03,-128.25) (   0.21,-127.22)  117.60                80
 08/19/2021   19:03:50   (   0.06,-128.17) (   0.98,-132.36)  477.24                80
 08/21/2021   06:27:45   (  -0.02,-128.26) (   0.83,-124.26)  454.93                80
 08/21/2021   18:51:40   (   0.05,-128.18) (   0.31,-129.41)  139.79                80
 08/23/2021   18:36:49   (   0.04,-128.19) (  -0.31,-126.45)  197.66                80