Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 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)
 08/12/2021   06:33:49   (   0.01,-128.17) (   0.54,-125.75)  275.76                80
 08/12/2021   18:57:43   (   0.02,-128.10) (   0.60,-130.89)  317.59                80
 08/14/2021   18:42:53   (   0.01,-128.13) (  -0.01,-127.93)   22.16                80
 08/16/2021   18:30:43   (   0.01,-128.16) (  -0.68,-124.99)  360.87                80
 08/17/2021   06:54:46   (  -0.04,-128.25) (  -0.45,-130.17)  219.02                80
 08/19/2021   06:39:55   (  -0.03,-128.26) (   0.17,-127.21)  118.82                80
 08/19/2021   19:03:50   (   0.06,-128.18) (   0.97,-132.36)  475.90                80
 08/21/2021   06:27:46   (  -0.02,-128.28) (   0.84,-124.27)  456.39                80
 08/21/2021   18:51:40   (   0.05,-128.19) (   0.29,-129.41)  138.21                80
 08/23/2021   18:36:49   (   0.04,-128.21) (  -0.32,-126.45)  199.52                80
 08/24/2021   07:00:53   (  -0.07,-128.30) (  -0.80,-131.64)  379.73                80