Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 7 26.  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)
 07/27/2021   06:33:41   (   0.07,-127.76) (   0.49,-125.73)  230.64                80
 07/27/2021   18:57:36   (  -0.05,-127.71) (   0.65,-130.88)  360.87                80
 07/29/2021   18:45:26   (  -0.06,-127.78) (   0.00,-127.93)   17.73                80
 07/31/2021   18:30:36   (  -0.06,-127.85) (  -0.65,-124.98)  325.57                80
 08/01/2021   06:54:41   (   0.04,-127.94) (  -0.43,-130.18)  254.21                80
 08/03/2021   06:39:51   (   0.04,-127.99) (   0.23,-127.23)   87.87                80
 08/05/2021   06:27:40   (   0.05,-128.04) (   0.83,-124.26)  429.32                80
 08/05/2021   18:51:35   (  -0.02,-127.97) (   0.31,-129.41)  163.82                80
 08/07/2021   18:36:45   (  -0.03,-128.02) (  -0.35,-126.46)  177.10                80
 08/08/2021   07:00:49   (   0.00,-128.12) (  -0.77,-131.65)  401.90                80